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USMLE COMPREHENSIVE REVIEW > D1-200 > Flashcards

D1-200 Flashcards

1
Q

What gland is found in the muscular triangle of the neck?

A

Thyroid Gland

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2
Q

Is an afferent or efferent pupillary defect described as B/L pupillary constriction when light is shined in the unaffected eye and B/L paradoxical dilation when light is shined in the affected eye?

A

Afferent pupillary defect (CN II lesion); in an efferent pupillary defect (CN III), B/L constrict when light is shined in the unaffected eye and consentual pupil constriction occurs when light is shined in the affected eye.

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3
Q

What is the name of the spinal cord passing within the subarachnoid space and forming the spinal nerves that exit the lumbar and sacral foramina?

A

Cauda equina

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4
Q

Name the laryngeal muscle described by the following: • Pulls the arytenoids cartilages closer to the thyroid, relaxing the vocal ligaments and thereby decreasing the pitch

A

Thyroarytenoid muscles

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5
Q

Name the laryngeal muscle described by the following: • Tenses the vocal ligaments, increasing the distance between the cartilages, thereby increasing the pitch

A

Cricothyroid muscles

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6
Q

Name the laryngeal muscle described by the following: • Adducts the vocal ligaments, closes the air passageway during swallowing, and allows phonation

A

Lateral cricoarytenoid muscles

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7
Q

Name the laryngeal muscle described by the following: • Only muscle to abduct the vocal cords

A

Posterior cricoarytenoid muscles

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8
Q

Where does the parotid (Stensen’s) duct enter the oral cavity?

A

Opposite the second upper molar tooth

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9
Q

From what aortic arch are the following structures derived? • Common and internal carotid arteries

A

Third aortic arch MS CARD is my mnemonic for the aortic arch derivatives

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10
Q

From what aortic arch are the following structures derived? • Degenerates

A

Fifth MS CARD is my mnemonic for the aortic arch derivatives

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11
Q

From what aortic arch are the following structures derived? • Stapes artery

A

Second MS CARD is my mnemonic for the aortic arch derivatives

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12
Q

From what aortic arch are the following structures derived? • Maxillary artery

A

First MS CARD is my mnemonic for the aortic arch derivatives

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13
Q

From what aortic arch are the following structures derived? • Arch of the aorta and right subclavian artery

A

Fourth MS CARD is my mnemonic for the aortic arch derivatives

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14
Q

From what aortic arch are the following structures derived? • Right and left pulmonary arteries and the ductus arteriosus

A

Sixth MS CARD is my mnemonic for the aortic arch derivatives

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15
Q

What abdominal muscle contributes to the anterior layer of the rectus sheath, forms the inguinal ligament, and in men gives rise to the external spermatic fascia of the spermatic cord?

A

External abdominal oblique

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16
Q

Name the compartment of the lower extremity and the nerve based on its movements. • Adduct the thigh and flex the hip

A

Medial compartment of the thigh, obturator nerve

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17
Q

Name the compartment of the lower extremity and the nerve based on its movements. • Plantar flex the foot, flex the toes, and invert the foot

A

Posterior compartment of the leg, tibial nerve

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18
Q

Name the compartment of the lower extremity and the nerve based on its movements. • Dorsiflex the foot, extend the toes, and invert the foot

A

Anterior compartment of the leg, deep peroneal nerve

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19
Q

Name the compartment of the lower extremity and the nerve based on its movements. • Flex the hip and extend the knee

A

Anterior compartment of the thigh, femoral nerve

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20
Q

Name the compartment of the lower extremity and the nerve based on its movements. • Extend the hip and flex the knee

A

Posterior compartment of the thigh, tibial nerve

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21
Q

Name the compartment of the lower extremity and the nerve based on its movements. • Plantar flex the foot and evert the foot

A

Lateral compartment of the leg, superficial peroneal nerve

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22
Q

What are the five branches of the posterior cord of the brachial plexus?

A

STARS 1. Upper Subscapularis 2. Thoracodorsal 3. Axillary 4. Radial 5. Lower Subscapularis

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23
Q

Name the correct artery. • The right recurrent laryngeal nerve passes around it.

A

Right brachiocephalic artery

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24
Q

Name the correct artery. • The left recurrent laryngeal nerve passes around it.

A

Arch of the aorta

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25
Q

The inferior mesenteric artery drains into it.

A

The splenic vein

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26
Q

Are the quadrate and caudate lobes of the liver functionally part of the left or right lobe?

A

Functionally they are part of the left lobe of the liver because they receive their blood supply from the left hepatic artery. Anatomically they are considered part of the right lobe of the liver.

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27
Q

What bones make up the acetabulum?

A

Pubis, ilium, and ischium

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28
Q

What is the anatomic positioning of the right and left gastric nerve plexus of the esophagus as they pass through the diaphragm?

A

LARP: Left goes Anterior and Right goes Posterior (because of the rotation of the gut; remember your embryology!)

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29
Q

What vessel is lacerated in an epidural hematoma?

A

Middle meningeal artery

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30
Q

True or false? Below the arcuate line, all the aponeurotic fibers run anterior to the rectus abdominis.

A

TRUE

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31
Q

What ocular muscle • Adducts the eyeball and is involved in horizontal conjugate gaze?

A

Medial rectus (CN III) (LR6 SO4)3

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32
Q

What ocular muscle • Elevates and adducts the eyeball?

A

Superior rectus (CN III) (LR6 SO4)3

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33
Q

What ocular muscle • Depresses and abducts the eyeball?

A

Superior Oblique (CN IV) (LR6 SO4)3

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34
Q

What ocular muscle • Elevates and abducts the eyeball?

A

Inferior Oblique (CN III) (LR6 SO4)3

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35
Q

What ocular muscle • Abducts the eyeball and is involved in horizontal conjugate gaze?

A

Lateral rectus (CN VI) (LR6 SO4)3

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36
Q

What ocular muscle • Depresses and adducts the eyeball?

A

Inferior rectus (CN III) (LR6 SO4)3

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37
Q

Which muscles of the eye are under parasympathetic control?

A

Constrictor pupillae and ciliary muscles

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38
Q

Which direction does the uvula deviate in a left vagus nerve lesion?

A

A left CN X lesion results in the uvula deviating to the right. (Uvula points away from the affected side.)

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39
Q

Is a subdural hematoma an arterial or venous bleed?

A

Subdural hematoma is a rupture of the cerebral veins where they enter the superior sagittal sinus.

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40
Q

Which CNs are found in the midline of the brainstem?

A

CN I, II, III, VI, and XII Add 1 + 1 = 2, 1 + 2 = 3, 1 + 2 + 3 = 6, 1 + 2 + 3 + 6 = 12

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41
Q

What muscles insert in or on the intertubercular groove of the humerus?

A

Lady between two Majors: latissimus dorsi, pectoralis major, and teres major

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42
Q

What nerve supplies taste sensation to the anterior two-thirds of the tongue?

A

Chorda tympani of CN VII

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43
Q

What part of the heart forms • The right border?

A

Right atrium

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44
Q

What part of the heart forms • Left border?

A

Left ventricle and auricle of left atrium

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45
Q

What part of the heart forms • Apex?

A

Tip of the left ventricle

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46
Q

What part of the heart forms • Base?

A

Left atrium and tip of the right atrium

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47
Q

What part of the heart forms • Superior border?

A

Conus arteriosus of the right ventricle and right and left auricles

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48
Q

What part of the heart forms • Anterior wall?

A

Right ventricle

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49
Q

What part of the heart forms • Posterior wall?

A

Left atrium

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50
Q

What part of the heart forms • Diaphragmatic wall?

A

Left ventricle and tip of right ventricle

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51
Q

What nerves carry the sensory and motor components of the blink reflex?

A

CN V1 carries the sensory and CN VII carries the motor component of the blink reflex.

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52
Q

What muscle keeps the stapes taut against the oval window?

A

Stapedius muscle

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53
Q

Name the components of the femoral canal, working laterally to medially.

A

NAVEL: Femoral Nerve, Artery, Vein, Empty space, and Lymphatics/Lacunar ligament

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54
Q

What muscle is most superior in the orbit?

A

Levator palpebrae superioris

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55
Q

What portion of the pericardium adheres to the tunica adventitia of the great vessels?

A

Fibrous pericardium

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56
Q

What two veins form the portal vein?

A

The superior mesenteric vein and the splenic vein (after it receives the inferior mesenteric vein) join to form the portal vein.

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57
Q

What CNs are responsible for the sensor and motor components of the light reflex?

A

CN II is the sensory limb and CN III is the motor component through parasympathetic stimulation.

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58
Q

Arrange the following layers in the correct sequence through which a needle must pass in a lumbar puncture. • Skin • Subarachnoid space • Interspinous ligament • Dura mater • Deep fascia • Epidural space • Superficial fascia • Interlaminar space • Supraspinous ligament • Arachnoid mater

A

During a lumbar puncture the needle passes through the interlaminar space in the midline of L3-L4, with the tip of the iliac crest in the flexed position as the landmark. Order of puncture: 1. Skin 2. Superficial fascia 3. Deep fascia 4. Supraspinous ligament 5. Interspinous ligament 6. Interlaminar space 7. Epidural space 8. Dura mater 9. Arachnoid mater 10. Subarachnoid space. (They ask this in some variation every year, so know it.)

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59
Q

What ocular ganglion is affected if the pupil on the affected side sluggishly responds to light with normal accommodation?

A

Ciliary ganglion producing a tonic pupil

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60
Q

What is the name for the most prominent spinous process?

A

Vertebra prominens (C7 in 70% of cases, C6 in 20%, T1 in 10%)

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61
Q

What muscles make up the rotator cuff?

A

SITS—Subscapularis, Infraspinatus, Teres minor, Supraspinatus

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62
Q

What is the function of white rami communicantes?

A

They are preganglionic sympathetic axons. They are white because they are myelinated.

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63
Q

What muscle or muscles are innervated by the following nerves? • Suprascapular nerve

A

Supraspinatus and infraspinatus

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64
Q

What muscle or muscles are innervated by the following nerves? • Upper subscapularis nerve

A

Subscapularis

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65
Q

What muscle or muscles are innervated by the following nerves? • Thoracodorsal nerve

A

Latissimus dorsi

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66
Q

What muscle or muscles are innervated by the following nerves? • Long thoracic nerve

A

Serratus anterior

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67
Q

What nerve is associated with the following functions? • Flex the wrist and digits, pronate the wrist and the LOAF (Lumbricales, Opponens pollicis, Abductor pollicis brevis, Flexor pollicis brevis) muscles of the hand

A

Median nerve

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68
Q

What nerve is associated with the following functions? • Flex the shoulder, flex the elbow, and supinate the elbow

A

Musculocutaneous nerve

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69
Q

What nerve is associated with the following functions? • Innervation of the flexor carpi ulnaris, flexor digiti profundus (pinky and ring fingers), and the intrinsic muscles of the hand

A

Ulnar nerve

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70
Q

What nerve is associated with the following functions? • Supinate the wrist, extend the wrist and digits, extend the shoulder and elbow

A

Radial nerve

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71
Q

What abdominal muscle runs horizontally, contributes to the posterior rectus sheath, and contributes to form the conjoint tendon?

A

Transverse abdominis

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72
Q

Which CNs act as the sensory and motor components of the gag reflex?

A

The sensory limb is via CN IX, and the motor limb is from CN X.

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73
Q

Which kidney is lower? Why?

A

The right kidney is lower in the abdominal cavity because of the amount of space the liver occupies.

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74
Q

What two regions of the vertebral column are considered primary curvatures?

A

Thoracic and sacral

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75
Q

What vein drains the lower third of the thoracic wall?

A

Hemiazygous vein

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76
Q

At what point does the axillary artery become the brachial artery?

A

When it crosses the teres major

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77
Q

What direction would the tongue protrude in a left CN XII lesion?

A

Left CN XII lesion would result in the tongue pointing to the left (points at the affected side).

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78
Q

At what vertebral level does the common carotid artery bifurcate?

A

C4 (the upper border of the thyroid cartilage)

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79
Q

True or false? Males are more likely to develop femoral hernias than females.

A

False. Females are more likely to develop femoral hernias then males (remember Female’s Femoral).

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80
Q

In what compartment of the thigh is the profundus femoris artery found?

A

Anterior compartment (it’s the blood supply to the posterior compartment)

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81
Q

Where is the cupola of the lung in relation to the subclavian artery and vein?

A

The cupola of the lung is posterior to the subclavian artery and vein. It is the reason one must be cautious when performing subclavian venipuncture.

82
Q

True or false? The first cervical vertebra has no vertebral body.

A

True. The odontoid process of C2 acts as the vertebral body of C1 allowing lateral rotation of the head.

83
Q

What is the largest muscle in the body?

A

Gluteus maximus

84
Q

At what vertebral levels does the aortic arch begin and end?

A

It both begins and ends at T4 (sternal angle [of Louis]).

85
Q

What artery travels with the following veins? • Great cardiac vein

A

Left anterior descending artery

86
Q

What artery travels with the following veins? • Middle cardiac vein

A

Posterior interventricular artery

87
Q

What artery travels with the following veins? • Small cardiac vein

A

Right coronary artery

88
Q

The ophthalmic artery is a branch of what vessel?

A

Internal carotid artery

89
Q

What structure or structures cross the diaphragm at • T8 level?

A

IVC Remember: 1 at T8, 2 at T10, and 3 at T12

90
Q

What structure or structures cross the diaphragm at • T10 level?

A

Esophagus and esophageal nerve plexus (CN X) Remember: 1 at T8, 2 at T10, and 3 at T12

91
Q

What structure or structures cross the diaphragm at • T12 level?

A

Aorta, azygos vein, and thoracic duct Remember: 1 at T8, 2 at T10, and 3 at T12

92
Q

Is the carotid sinus sensitive to pressure or oxygen?

A

The carotid sinus is a pressure-sensitive (low) receptor, while the carotid body is an oxygen-sensitive (low) receptor. (Remember “Sinus Pressure”).

93
Q

What nerve or nerves supply general sensation and taste to the posterior third of the tongue?

A

CN XI and X

94
Q

Which muscle of the eye is under sympathetic control?

A

Dilator pupillae muscle

95
Q

True or false? both the left and right lungs have an oblique fissure?

A

True. on the right lung the oblique fissure divides the middle from the inferior lobe and the horizontal fissure further divides the middle from the upper lobe. On the left the oblique divides the superior from the inferior lobe.

96
Q

What are the three branches of the lateral cord of the brachial plexus?

A
  1. Lateral pectoral 2. Lateral head of the median 3. Musculocutaneus
97
Q

What is the major difference between the veins in the face and the veins in the rest of the body?

A

There are no valves and no smooth muscle in the walls of the veins in the face.

98
Q

Name the bony articulations of the following sites. Be specific. • Shoulder

A

Clavicle, acromion, and glenoid fossa of the scapula and the humerus

99
Q

Name the bony articulations of the following sites. Be specific. • Elbow

A

Humerus with ulna (major) and radius (minor)

100
Q

Name the bony articulations of the following sites. Be specific. • Wrist

A

Radius with scaphoid and lunate and ulna with triquetrum and pisiform (Remember, for major articulations, wrist/radius and humerus/ulna = elbow)

101
Q

What is the only laryngeal muscle innervated by the external laryngeal nerve?

A

Cricothyroid muscle; all other laryngeal muscles are innervated by the recurrent laryngeal nerve.

102
Q

What seven structures are found in more than one mediastinum?

A

Esophagus, SVC, vagus nerve, azygos vein, thoracic duct, thymus, and phrenic nerve

103
Q

How many bronchopulmonary segments are on the right lung? Left lung?

A

There are 10 bronchopulmonary segments on the right and 8 on the left.

104
Q

The duodenal-jejunal flexure is suspended from the posterior abdominal wall by what?

A

Ligament of Treitz

105
Q

What is the only tongue muscle innervated by CN X?

A

Palatoglossus muscle is innervated by CN X; all other tongue muscles are innervated by CN XII.

106
Q

What abdominal muscle runs in a posteroinferior direction, splits to contribute to the rectus sheath, contributes to the formation of the conjoint tendon, and in men gives rise to the middle spermatic fascia and the cremasteric muscle of the spermatic cord?

A

Internal abdominal oblique

107
Q

What are the five branches of the superior mesenteric artery?

A

Inferior pancreaticoduodenal, middle colic, right colic, ileocolic, and 10 to 15 intestinal arteries

108
Q

What spinal nerves contribute to the pelvic splanchnic (parasympathetic) nerves that innervate the detrusor muscle of the urinary bladder?

A

S2, S3, S4—keeps the pee-pee off the floor!

109
Q

What connects the third and the fourth ventricles?

A

Cerebral aqueduct

110
Q

What nerve and artery could be affected in a humeral neck fracture?

A

Axillary nerve and posterior humeral artery

111
Q

What type of hernia is described as passing through the deep lateral ring of the inguinal canal?

A

Indirect hernia passes in the inguinal canal; a direct hernia passes directly through Hesselbach’s triangle.

112
Q

What two vessels come together to form the external jugular vein?

A
  1. Posterior auricular vein 2. Posterior division of the retromandibular vein
113
Q

What is the only vein in the body with a high O2 content?

A

The pulmonary vein, which carries oxygenated blood from the lung to the left atrium.

114
Q

What are the three branches of the celiac trunk?

A

The left gastric, splenic, and common hepatic arteries

115
Q

What region of the pharynx does the eustachian tube enter?

A

Nasopharynx

116
Q

What is the only muscle of the soft palate that is innervated by CN V3?

A

The tensor veli palatine is innervated by the mandibular division of the trigeminal nerve; all others are innervated by CN X.

117
Q

How many pairs of spinal nerves exit from the spinal cord?

A

31 pairs

118
Q

What artery turns into the dorsalis pedis when it crosses the extensor retinaculum?

A

Anterior tibial artery

119
Q

What is the term for pupils that react normally to accommodation but have bilateral loss of constriction in response to light?

A

Argyll Robertson pupils

120
Q

What connects the lateral ventricles to the third ventricle?

A

Foramen of Monro

121
Q

What nerve supplies general sensation to the anterior two-thirds of the tongue?

A

Lingual nerve of CN V3

122
Q

What type of pleura is adherent to the surface of the organ?

A

Visceral pleura

123
Q

What artery supplies the left ventricle, left atrium, and interventricular septum?

A

Left coronary artery

124
Q

Where are the tonsillar tissues?

A

Waldeyer’s ring

125
Q

What is the name of the superficial subcutaneous fascia of the abdomen containing fat?

A

Camper’s fascia; Scarpa’s fascia is devoid of fat. (Remember campers are fat.)

126
Q

What are the three anatomic characteristics that differentiate the large bowel from the small bowel and the rectum?

A
  1. Tinea coli 2. Haustra 3. Epiploic appendages
127
Q

What area of the posterior aspect of the eye has no photoreceptors?

A

The optic disk is the blind spot.

128
Q

At the level of rib 6, the internal thoracic artery divides into what two arteries?

A

Musculophrenic and superior epigastric arteries

129
Q

What is the name of inflammation of the prepatellar bursa?

A

Housemaid’s knee

130
Q

What nerve roots constitute the cervical plexus?

A

C1 through C4

131
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Heart and pericardium

A

Middle

132
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Descending aorta

A

Posterior

133
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Thymus

A

Superior and anterior

134
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Phrenic nerve

A

Superior and middle

135
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Esophagus

A

Superior and posterior

136
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Trachea

A

Superior

137
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Ascending aorta

A

Middle

138
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Thoracic duct

A

Superior and posterior

139
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Azygos vein

A

Superior and posterior

140
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • SVC

A

Superior and middle

141
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Splanchnic nerves

A

Posterior

142
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Aortic arch

A

Superior

143
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • IVC

A

Middle

144
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Vagus nerve

A

Posterior

145
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Brachiocephalic vein

A

Superior

146
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Pulmonary artery and veins

A

Middle

147
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Left common carotid artery

A

Superior

148
Q

Name the compartment of the mediastinum associated with the following thoracic structures: • Left subclavian artery

A

Superior

149
Q

What is the only organ in the body supplied by preganglionic sympathetic fibers?

A

Adrenal medulla

150
Q

The left subclavian artery is a branch of what artery?

A

The left is a branch of the aortic arch, while the right is a branch of the brachiocephalic trunk.

151
Q

What are the four muscles of mastication?

A
  1. Masseter 2. Temporalis 3. Medial pterygoid 4. Lateral pterygoid
152
Q

With what thoracic vertebra or vertebrae does rib 7 articulate?

A

Rib 7 articulates with T7 and T8. Each rib articulates with the corresponding numerical vertebral body and the vertebral body below it.

153
Q

What are the three branches of the inferior mesenteric artery?

A

Left colic, superior rectal, and sigmoidal arteries

154
Q

What is the only valve in the heart with two cusps?

A

Mitral (bicuspid) valve

155
Q

What are five clinical signs of portal HTN?

A

Caput medusa, internal hemorrhoids, esophageal varices, retroperitoneal varices, and splenomegaly

156
Q

What three muscles constitute the erector spinae?

A
  1. Iliocostalis 2. Longissimus 3. Spinalis (“I Love Science” muscles)
157
Q

What nerve is compromised in carpal tunnel syndrome?

A

Median nerve

158
Q

What vascular injury may result from a supracondylar fracture of the femur?

A

The popliteal artery, the deepest structure in the popliteal fossa, risks injury in a supracondylar fracture of the femur.

159
Q

What nerve and artery could be affected in a midshaft humeral fracture?

A

Radial nerve and the profunda brachii artery

160
Q

Name the 10 retroperitoneal organs.

A

. Duodenum (all but the first part) 2. Ascending Colon 3. Ureters 4. Pancreas 5. Supra renal glands (adrenals) 6. Descending colon 7. Aorta 8. Kidneys 9. Rectum 10. IVC D CUPS DAKRI is the mnemonic, everything else is covered with peritoneum

161
Q

Ventral rami of what cervical nerves constitute the phrenic nerve?

A

C3, C4, and C5 keep the diaphragm alive!

162
Q

What is the region of the fallopian tube where fertilization most commonly occurs?

A

Ampulla

163
Q

What foramen must be traversed for entry into the lesser peritoneal sac?

A

Foramen of Winslow

164
Q

Name the structure that enters or exits the following foramina: • Foramen magnum

A

CN XI, vertebral arteries

165
Q

Name the structure that enters or exits the following foramina: • Foramen spinosum

A

Middle meningeal artery

166
Q

Name the structure that enters or exits the following foramina: • Foramen rotundum

A

CN V2

167
Q

Name the structure that enters or exits the following foramina: • Foramen ovale

A

CN V3 and the lesser petrosal nerve

168
Q

Name the structure that enters or exits the following foramina: • Jugular foramen

A

CN IX, X, and XI; sigmoid sinus

169
Q

Name the structure that enters or exits the following foramina: • Carotid canal

A

Internal carotid artery and sympathetic plexus

170
Q

Name the structure that enters or exits the following foramina: • Stylomastoid foramen

A

CN VII

171
Q

Name the structure that enters or exits the following foramina: • Hypoglossal canal

A

CN XII

172
Q

Name the structure that enters or exits the following foramina: • Internal auditory meatus

A

CN VII and VIII

173
Q

Name the structure that enters or exits the following foramina: • Optic canal

A

CN II and ophthalmic artery

174
Q

Name the structure that enters or exits the following foramina: • Cribriform plate

A

CN I

175
Q

What vessel can be found atop the scalene anterior?

A

Subclavian vein

176
Q

What component of the corneal reflex is lost in a CN VII deficit?

A

Motor aspect

177
Q

A motor lesion to the right CN V results in deviation of the jaw to which side?

A

A right CN V lesion results in weakened muscles of mastication, and the jaw deviates to the right.

178
Q

What two arteries join to form the superficial and deep palmar arches of the hand?

A

Ulnar and radial arteries (ulnar is the main supplier)

179
Q

What two ligaments of the uterus are remnants of the gubernaculum?

A

Round and ovarian ligaments

180
Q

What segments of the lumbosacral plexus form the following nerves? • Tibial nerve

A

L4 to S3 (L2 to L4, thigh; L4 to S3, leg)

181
Q

What segments of the lumbosacral plexus form the following nerves? • Common peroneal nerve

A

L4 to S3 (L2 to L4, thigh; L4 to S3, leg)

182
Q

What segments of the lumbosacral plexus form the following nerves? • Femoral nerve

A

L2 to L4 (L2 to L4, thigh; L4 to S3, leg)

183
Q

What segments of the lumbosacral plexus form the following nerves? • Obturator nerve

A

L2 to L4 (L2 to L4, thigh; L4 to S3, leg)

184
Q

What three structures are in contact with the left colic flexure? With the right colic flexure?

A

Left: stomach, spleen, and left kidney; right: liver, duodenum, and right kidney

185
Q

What three muscles constitute the pes anserinus?

A
  1. Sartorius 2. Gracilis 3. Semitendinous
186
Q

What is the only pharyngeal muscle not innervated by CN X?

A

Stylopharyngeus muscle is innervated by CN IX; all other pharyngeal muscles are innervated by CN X.

187
Q

What vessels carry deoxygenated blood into the lungs from the right ventricle?

A

The right and left pulmonary arteries, the only arteries that carry deoxygenated blood

188
Q

Fracture of the fibular neck, resulting in foot drop, is an injury of what nerve?

A

Common peroneal nerve

189
Q

What vein is formed by the union of the right and left brachiocephalic veins?

A

Superior vena cava

190
Q

If inserting a needle to perform a pleural tap or insertion of a chest tube, do you use the inferior or the superior border of a rib as your landmark? Why?

A

The superior border of the inferior intercostal rib is your landmark for a pleural tap because along the inferior border of each rib is the neurovascular bundle, and you would risk injury if you went below the rib.

191
Q

What muscle laterally rotates the femur to unlock the knee?

A

Popliteus

192
Q

What chamber of the eye lies between the iris and the lens?

A

Posterior chamber

193
Q

What artery supplies the right atrium, right ventricle, sinoatrial and atrioventricular nodes?

A

Right coronary artery

194
Q

What four branches of the brachial plexus arise prior to the first rib?

A
  1. Dorsal scapular 2. Suprascapular 3. Long thoracic 4. Nerve to subclavius
195
Q

What vertebral level is marked by the xiphoid process?

A

T9

196
Q

What lower extremity nerve is described by the following motor loss? • Loss of eversion; inversion, dorsiflexion, and plantarflexion of the foot

A

Common peroneal nerve

197
Q

What lower extremity nerve is described by the following motor loss? • Loss of flexion of the knees and toes, plantarflexion, and weakened inversion

A

Tibial nerve

198
Q

What lower extremity nerve is described by the following motor loss? • Loss of knee extension, weakened hip flexion

A

Femoral nerve

199
Q

What lower extremity nerve is described by the following motor loss? • Loss of abduction of the hip resulting in Trendelenburg gait

A

Superior gluteal nerve

200
Q

What lower extremity nerve is described by the following motor loss? • Loss of flexion of the knee and all function below the knee, weakened extension of the thigh

A

Sciatic nerve

USMLE COMPREHENSIVE REVIEW (8 decks)

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