Musculoskeletal Flashcards

1
Q

What are the muscles of the upper arm?

A

Anterior compartment

  • biceps brachii
  • brachialis
  • corachobrachialis

Posterior compartment
- triceps brachii

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2
Q

What is the innervation of the anterior compartment of the upper arm?

A

Musculocutaneous nerve

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3
Q

What is the arterial supply of the anterior compartment of the upper arm?

A

Brachial artery

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4
Q

What are the attachments of the biceps brachii?

A

Two heads;

  • long head attaches to supraglenoid tubercle
  • short head attaches to coracoid process
  • tendon inserts into radial tuberosity

As tendon enters forearm gives off bicipital aponeurosis which forms roof of cubital fossa

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5
Q

What is the function of the biceps brachii?

A

Supination of forearm

Also flexion of elbow and shoulder joints

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6
Q

What is the innervation of the biceps brachii?

A

Musculocutaneous nerve

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7
Q

What nerve root does the biceps tendon reflex test?

A

C6

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8
Q

What are the attachments of the corachobrachialis?

A

Lies deep to biceps brachii

  • coracoid process of scapula, passes through axilla, medial side of humeral shaft
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9
Q

What is the function of corachobrachialis?

A

Flexion of shoulder

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10
Q

What is the innervation of corachobrachialis?

A

Musculocutaneous nerve

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11
Q

What are the attachments of brachialis?

A

More distal than other anterior compartment muscles, deep to biceps brachii

Medial and lateral humeral shaft to ulnar tuberosity

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12
Q

What is the function of brachialis?

A

Flexion of elbow

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13
Q

What is the innervation of brachialis?

A

Musculocutaneous nerve

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14
Q

What are the attachments of triceps brachii?

A

Medial head is deep to and covered by the other two

Origination

  • long head; infraglenoid tubercle
  • lateral head; humerus superior to radial groove
  • medial head; humerus inferior to radial groove

Insertion;
- converge onto one tendon and insert into olecranon of ulna

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15
Q

What is the function of triceps brachii?

A

Extension of elbow

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16
Q

What is the innervation of triceps brachii?

A

Radial nerve

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17
Q

What root does the triceps tendon reflex test?

A

C7

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18
Q

What connects the radius and ulna?

A

Interosseous membrane - fibrous joint

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19
Q

What are the flexors of the wrist?

A

Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

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20
Q

What nerve supplies the anterior compartment of the forearm?

A

Musculocutaneous nerve

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21
Q

What are the muscles in the first layer in the anterior forearm?

A

Pronator teres
Flexor carpi radialis (FCR)
Palmaris longus
Flexor carpi ulnaris (FCU)

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22
Q

What muscles make up the second layer of the anterior forearm?

A

Flexor digitorum superficialis

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23
Q

What muscles make up the third layer of the anterior forearm?

A

Flexor digitorum profundus (FDP)

Flexor pollicis longus (FPL)

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24
Q

What muscles make up the distal third layer of the anterior forearm?

A

Pronator quadratus

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25
Q

What are the muscles in the posterior compartment of the forearm?

A
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Anconeus
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26
Q

What are the attachments of the anconeus?

A

Origin; lateral epicondyle of humerus

Insertion; lateral surface of olecranon

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27
Q

What is the innervation of the anconeus muscle?

A

Radial nerve (C7-C8)

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28
Q

What is the blood supply of the anconeus muscle?

A

posterior interosseous recurrent artery

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29
Q

What are the actions of the anconeus?

A

Assist in forearm extension at elbow

Stabilisation of elbow

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30
Q

What are the muscles of the anterior compartment of the thigh?

A

Sartorius

Pectineus

Quadriceps femoris

  • vastus lateralis
  • vastus intermedius
  • vastus medialis
  • rectus femoris
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31
Q

What is the innervation of the muscles in the anterior compartment of the thigh?

A

Femoral nerve (L2-L4)

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32
Q

What are the muscles in the medial compartment of the thigh?

A

AKA the hip adductors

Gracilis
Obturator externus
Adductor brevis
Adductor longus
Adductor magnus
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33
Q

What is the innervation of the muscles in the medial compartment of the thigh?

A

Obturator nerve (L2-L4)

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34
Q

What are the muscles in the posterior compartment of the thigh?

A

AKA the hamstrings

Lateral to Medial

  • biceps femoris
  • semitendinosus
  • semimembranosus
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35
Q

What is the innervation of the soleus?

A

Ventral rami of S1 and S2

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36
Q

What is the innervation of the gastrocnemius?

A

Ventral rami of S1 and S2

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37
Q

What is the innervation of the muscles in the posterior compartment of the thigh?

A

Sciatic nerve

*all by tibial part except lateral head of biceps femoris which is common fibular part

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38
Q

What is the innervation of the glutes?

A

Gluteus maximus; inferior gluteal nerve

Gluteus medius and minimis; superior gluteal nerve

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39
Q

What are the muscles of the anterior leg?

A

Tibialis anterior
extensor digitorum longus
extensor hallucis longus
fibularis tertius

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40
Q

What is the innervation of the anterior leg muscles?

A

Deep fibular nerve

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41
Q

What are the muscles of the posterior leg?

A

Superficial

  • soleus
  • gastrocnemius
  • plantaris

Deep

  • popliteus
  • tibialis posterior
  • flexor hallucis longus
  • flexor digitorum longus
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42
Q

What is the innervation of the muscles in the posterior leg?

A

Tibial nerve

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43
Q

What are the ligaments of the hip joint?

A

Intracapsular
- ligamentum teres

Extracapsular

  • pubofemoral
  • ischiofemoral
  • iliofemoral
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44
Q

Bones of the hip joint and articulating surfaces

A

Femur: Femoral head

Pelvis: Acetabulum

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45
Q

What movement(s) does the gracilis muscle facilitate?

A

Hip adduction

Aids knee flexion

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46
Q

What movement(s) does the obturator externus facilitate?

A

External rotation of femur when hip in neutral position

Hip adduction when hip flexed

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47
Q

What movement(s) does the adductor brevis facilitate?

A

Hip adduction

Also flexion and medial rotation of thigh

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48
Q

What movement(s) does the adductor magnus facilitate?

A

Hip adduction

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49
Q

What movement(s) does the adductor longus facilitate?

A

Hip adduction

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50
Q

What movement(s) does the pectineus facilitate?

A

Flexion of hip

Also aids in hip adduction and medial rotation of femur

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51
Q

What movement(s) does the sartorius facilitate?

A

A synergist muscle; all actions are weak

Hip: flexion, adduction and lateral rotation

Knee: flexion, medial rotation when knee flexed

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52
Q

What movement(s) does the quadriceps femoris facilitate?

A

Extensor of knee

Flexion of hip

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53
Q

What movement(s) does the biceps femoris facilitate?

A

Knee flexion

External and internal rotation

Hip extension

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54
Q

What movement(s) does the semitendinosus facilitate?

A

Knee flexion

Hip extension

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55
Q

What movement(s) does the semimembranosus facilitate?

A

Knee flexion

Hip extension

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56
Q

What movement(s) does the gluteus maximus facilitate?

A

Hip extension, external rotation, abduction (superior part) and adduction (inferior part)

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57
Q

What movement(s) does the tibialis anterior facilitate?

A

Foot dorsiflexion and inversion

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58
Q

What movement(s) does the extensor digitorum longus facilitate?

A

Extension of toes, dorsiflexion of foot

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59
Q

What movement(s) does the extensor hallucis longus facilitate?

A

Extends big toe and dorsiflexes foot

Also assists in foot eversion and inversion

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60
Q

What movement(s) does the fibularis tertius facilitate?

A

Weak dorsiflexion and eversion at ankle

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61
Q

What movement(s) does the gastrocnemius facilitate?

A

Plantar flexion ankle

Flexion of knee

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62
Q

What movement(s) does the soleus facilitate?

A

Plantar flexion ankle

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63
Q

What movement(s) does the plantaris facilitate?

A

Weak plantar flexion ankle and flexion knee

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64
Q

What movement(s) does the popliteus facilitate?

A

Helps leg unlock from straight position by flexing and internally rotating knee joint

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65
Q

What movement(s) does the tibialis posterior facilitate?

A

Inversion ankle

Assists in plantar flexion ankle

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66
Q

What movement(s) does the flexor hallucis longus facilitate?

A

Plantar flex and invert ankle joint

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67
Q

What movement(s) does the flexor digitorum longus facilitate?

A

Plantar flex and invert ankle joint

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68
Q

What dermatome supplies the thumb?

A

C6

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69
Q

What dermatome supplies the index and middle fingers?

A

C7

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70
Q

What dermatome supplies the ring and little fingers?

A

C8

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71
Q

What area does C5 supply?

A

Shoulder and anterior arm/forearm

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72
Q

What area does T1 supply?

A

Axilla and anterior arm/forearm

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73
Q

What are the groups of axillary lymph nodes?

A
  1. Anterior/pectoral group
  2. Posterior/subscapular group
  3. Apical group
  4. Central group
  5. Lateral group

The axillary lymph nodes drain all lymph from the arms

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74
Q

What makes up the acromioclavicular joint?

A

The acromion of the scapula and the clavicle (lateral part)

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75
Q

What is the conoid tubercle?

A

Attachment point for the conoid tubercle on the clavicle, which binds the clavicle to the coracoid process of the scapula

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76
Q

What are the features of the scapula?

A
Acromion
Coracoid process
Glenoid cavity
Spine of scapula
Supraspinous and infraspinous fossa
Subscapular fossa
Medial and lateral border
Inferior and superior angle
Supra and infra-glenoid tubercles
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77
Q

What type of joint is the acromioclavicular joint?

A

Synovial plane

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78
Q

What type of joint is the sternoclavicular joint?

A

Synovial plane

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79
Q

What muscles are involved in elevation of scapula?

A

Levator scapulae
Upper fibres of trapezius
Rhomboid major and minor

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80
Q

What muscles are involved in depression of scapula?

A

Pectoralis major and minor
Lower fibres of trapezius
Latissimus dorsi
Serratus anterior

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81
Q

What muscles are involved in protraction of the scapula?

A
Serratus anterior (main function)
Pectoralis major and minor
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82
Q

What muscles are involved in retraction of the scapula?

A

Trapezius (middle fibres)

Rhomboids

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83
Q

What muscles are involved in upward/lateral rotation of the scapula?

A

Trapezius (upper fibres)

Serratus anterior

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84
Q

What muscles are involved in downward/medial rotation of the scapula?

A

Levator scapulae
Rhomboids
Pectoralis minor

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85
Q

What is the glenoid labrum?

A

Rim of cartilage surrounding the glenoid cavity (socket) of the shoulder joint

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86
Q

What is the function of the glenoid labrum?

A

deepens glenoid cavity, increases surface of shoulder joint

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87
Q

What are the ligaments of the shoulder joint?

A
Acromioclavicular
Coracoacromial
Coracoclavicular
Coracohumeral
Glenohumeral ligaments (strengthen anterior joint capsule)
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88
Q

What does the coracohumeral do?

A

Strengthens the superior aspect of the joint capsule

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89
Q

What makes up the coracoacromial arch?

A

Inferior aspect of the acromion
Coracoid process of scapula
Coracoacromial ligament

90
Q

What is the function of the coraco-acromial arch?

A

Prevents superior displacement of the humeral head

91
Q

Which bursa communicates with the shoulder joint cavity?

A

Subscapular

92
Q

What is the role of subacromial bursa?

A

reduce friction

93
Q

What movement do anterior fibres of deltoid generate?

A

Flexion and medial rotation of shoulder joint

94
Q

What movement do middle fibres of deltoid generate?

A

Abduct shoulder joint

95
Q

What movement do posterior fibres of deltoid generate?

A

Extend and laterally rotate shoulder joint

96
Q

What nerve supplies the deltoid?

A

Axillary nerve

97
Q

What movement does pectoralis major generate on the shoulder?

A

flexion, extension, adduction and medial rotation

98
Q

Which vein is located in the deltopectoral triangle?

A

Subclavian vein; used for insertion of central lines

99
Q

What is the nerve supply of serratus anterior?

A

long thoracic nerve

100
Q

What clinical sign is seen if long thoracic nerve is damaged?

A

scapular winging

101
Q

What movements of the shoulder does teres major generate?

A

Medial rotation
Adduction
Extension

102
Q

What movements of the shoulder does latissimus dorsi generate?

A

Adduction
Extension
Internal rotation

103
Q

What muscles are responsible for flexion of the shoulder joint?

A

Pectoralis major
Anterior deltoid
Corachobrachialis

104
Q

What muscles are responsible for extension of the shoulder joint?

A

Latissimus dorsi
posterior deltoid
Teres major

105
Q

What muscles are responsible for adduction of shoulder joint?

A

Pectoralis major
Latissimus dorsi
corachobrachialis

106
Q

What muscles cause abduction of the shoulder joint?

A

Middle part of deltoid

Infraspinatus

107
Q

What muscles cause medial rotation of shoulder joint?

A

Subscapularis
Latissimus dorsi
Pectoralis major
Teres major

108
Q

What muscles cause lateral rotation of shoulder joint?

A

Teres minor

Infraspinatus

109
Q

What are the roots of the musculocutaneous nerve?

A

C5, 6, 7

110
Q

From which cord of brachial plexus does musculocutaneous nerve arise?

A

Lateral cord

111
Q

Where does the musculocutaneous nerve provide sensation to?

A

Lateral forearm

*as it enters forearm it becomes lateral cutaneous nerve of forearm

112
Q

What cords form the median nerve?

A

lateral cord and medial cord

113
Q

What forms the borders of the cubital fossa?

A

Base is an imaginary line drawn between the two epicondyles

Medial border formed by pronator teres

Lateral border formed by brachioradialis

114
Q

What is the root value of the radial nerve?

A

C5, 6, 7, 8 and T1

115
Q

What is the characteristic sign of radial nerve injury?

A

wrist drop

116
Q

What type of joint is the elbow joint?

A

Synovial hinge

117
Q

What are the articular parts of the elbow joint?

A
Trochlea (medial)
Capitulum (lateral)
Trochlear notch
Coronoid process
Olecranon process
Head of radius
118
Q

What are the ligaments of the elbow joints?

A

Medial (ulnar) collateral ligament

Lateral (radial) collateral ligament

119
Q

Which ligament holds the head of the radius?

A

Annular ligament

120
Q

What are the flexors of the elbow joint?

A

Brachialis
Biceps brachii
Brachioradialis

121
Q

What are the extensors of the elbow joint?

A

Triceps brachii

Anconeus

122
Q

What type of joint are the proximal and distal radio-ulnar joints?

A

Both synovial pivot

123
Q

What muscles cause supination of the radio-ulnar joint?

A

Biceps brachii

Supinator muscle

124
Q

What muscles cause pronation of the radio-ulnar joint?

A

Pronator teres

Pronator quadratus

125
Q

Which muscle is the most powerful supinator of the forearm?

A

Biceps brachii

126
Q

Which muscle is the most powerful pronator of the forearm?

A

Pronator teres

127
Q

On which phalanx are the tendons of the flexor digitorum superficialis inserted?

A

intermediate

128
Q

What nerve innervates FDS?

A

median nerve

129
Q

What is the nerve supply to the FDP?

A

Medial half - ulnar nerve

Lateral half - median nerve

130
Q

What nerve innervates the flexor pollicis longus?

A

median nerve

131
Q

What nerve innervates pronator quadratus?

A

Median nerve

132
Q

where is the median nerve in relation to the brachial artery within the cubital fossa?

A

Lateral to it

133
Q

Which muscles in the forearm are not supplied by the median nerve?

A

Flexor carpi ulnaris and flexor digitorum profundus

134
Q

How does the median nerve enter the hand?

A

Passes deep to the flexor retinaculum

135
Q

How does the ulnar nerve enter the forearm?

A

Passes between the heads of flexor carpi ulnaris

136
Q

Where is the ulnar nerve in relation to the ulnar artery?

A

Medial

137
Q

What are the terminal branches of the brachial artery?

A

Radial and ulnar artery

138
Q

At what part of the radius does the brachial artery divide into two?

A

Head of radius

139
Q

What are the contents of the carpal tunnel?

A

Median nerve
4 tendons of FDS
4 tendons of FDP
1 tendon of FPL

140
Q

Where is the carpal tunnel?

A

Located deep to the flexor retinaculum between the scaphoid and the trapezium on the lateral side and the pisiform and hamate on the medial side

141
Q

What are the carpal bones?

A

Two rows;
Proximal lat to medial - Scaphoid Lunate Triquetrum Pisiform
Distal lat to medial - Trapezium Trapezoid Capitate Hamate

Some lovers try positions that they can’t handle

142
Q

which muscle is continuous with the palmar fascia?

A

Palmaris longus

143
Q

What are the five compartments for the intrinsic muscles of the hand?

A

1) thenar compartment
2) hypothenar compartment
3) Adductor compartment
4) Lumbricals and long flexor tendons (central compartment)
5) interosseous compartment

144
Q

What are the thenar muscles?

A

Responsible mainly for thumb movement

Abductor pollicis brevis
Flexor pollicis brevis
Opponens brevis
Adductor pollicis

145
Q

What are the hypothenar muscles?

A

Medial side of palm

Abductor digiti minimi
Flexor digiti minimi
Opponens digit minimi

146
Q

What nerve supplies sensation to the medial aspect of leg and foot?

A

Saphenous nerve

147
Q

What nerve supplies sensation to the lateral aspect of poot and posterolateral leg?

A

Sural nerve

148
Q

What nerve supplies sensation to the lateral thigh?

A

Lateral femoral cutaneous nerve

149
Q

What nerve supplies sensation to the anterolateral leg and greater part of dorsum of foot?

A

Superficial fibular nerve

150
Q

What is the innervation of pronator teres?

A

Median nerve

151
Q

Other than flexing the wrist, what is the function of FCR and FCU?

A

FCR; abduction

FCU; adduction

152
Q

Which nerve innervates brachioradialis?

A

radial nerve

153
Q

What is the function of brahioradialis?

A

elbow flexion

154
Q

What does flexor digitorum superficialis do?

A

Flexes wrist, metacarpophalangeal and interphalangeal joints

NOT distal interphalangeal joint as it does not cross this joint

155
Q

What nerve innervates FDS?

A

median nerve

156
Q

Where is flexor pollicis longus situated?

A

Deep layer anterior forearm

Close to radius

157
Q

Where is flexor digitorum profundus?

A

Deep layer anterior forearm

Close to ulna

158
Q

What joints does the FDP act on?

A

All joints

159
Q

What is the nerve supply of FDP?

A

Medial half supplied by ulnar nerve and lateral half by medial nerve

160
Q

Which nerve innervates FPL?

A

median nerve

161
Q

Which muscle is continuous with the fascia on the palm?

A

PALMaris longus

162
Q

What are the compartments for the muscles of the hand?

A

5 compartments

  • thenar compartment
  • hypothenar compartment
  • lumbricals and long flexor tendons; central compartment
  • interosseous compartment
163
Q

What are the thenar muscles?

A

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

164
Q

What is the function of APB?

A

abduction thumb

165
Q

What is the function of FPB?

A

flexion thumb

166
Q

What is the function of opponens pollicis?

A

flexion thumb

167
Q

What is the innervation of the thenar muscles?

A

median nerve

C567

168
Q

What are the hypothenar muscles?

A

Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi

169
Q

What nerve innervates the hypothenar muscles?

A

ulnar nerve

C8 T1

170
Q

What are the two heads of the adductor pollicis?

A

Transverse head

Oblique head

171
Q

What are the lumbrical muscles?

A

Four earthworm like muscles forming central compartment

172
Q

From what long flexor tendons do the lumbricals originate?

A

Flexor digitorum profundus

173
Q

What is the action of the lumbricals?

A

Flex fingers at metacarpophalangeal joint and simultaneously extend interphalangeal joint of 2nd to 5th digits

174
Q

What is the innervation of the lumbricals?

A

Medial two by ulnar nerve

Lateral two by median nerve

175
Q

What are the interossei?

A

Muscles present between the metacarpal bones

4 dorsal and 3 palmar

176
Q

What is the action of the interossei?

A

DAB; Dorsal ABduct fingers

PAD; Palmar ADDuct fingers

177
Q

Which nerve innervates the interossei?

A

ulnar

178
Q

What artery is the main contributor to superficial palmar arch?

A

ulnar artery

179
Q

What artery is main contributor to deep palmar arch?

A

Radial artery

180
Q

What is the nerve supply of the hand?

A

Medial and ulnar nerve supply muscles

radial nerve doesn’t supply muscles but does supply skin on dorsal aspect

181
Q

What is the nerve supply to the skin of the hand?

A

Palmar; lateral - median nerve, medial - ulnar nerve

Dorsal; pinky and part ring finger - ulnar nerve, fingertips up to half of ring finger and thumb tip - median nerve, lateral part - radial nerve

182
Q

What are the bones of the hand?

A

Four nearest arm then four further away

Some lovers try positions, that they can’t handle

Trapezium, trapezoid, capitate, hamate
Scaphoid, lunate, triquetrum, pisiform

^this is the way they appear on the hand (scaphoid is above radius)

183
Q

What type of joint is the wrist joint?

A

Synovial condyloid

184
Q

Which structure forms the proximal part of the wrist joint?

A

Radius

185
Q

What is the combined action of FCU and ECU on the wrist joint?

A

Adduction
OR
Cause ulnar deviation

186
Q

Which muscles are responsible for the abduction of the wrist joint?

A

Extensor carpi radialis longus and brevis

187
Q

How do the ulnar artery and nerve enter the hand?

A

Above flexor retinaculum

188
Q

What is the function of extensor carpi radialis longus and brevis on the wrist joint?

A

Extension and abduction

189
Q

what is the common extensor origin?

A

lateral epicondyle

190
Q

what is the common flexor origin?

A

medial epicondyle

191
Q

Which nerve innervates the muscles of the posterior forearm?

A

radial nerve

192
Q

Function of extensor digitorum

A

extend medial four digits at MCP joints

193
Q

Function of extensor carpi radialis longus

A

extend wrist

Abduct hand

194
Q

Function of extensor carpir radialis brevis

A

Extend wrist

Abduct hand

195
Q

Function of brachioradialis

A

Flexion forearm at elbow

196
Q

Function of extensor carpi ulnaris

A

extends and adducts wrist

197
Q

Function of supinator muscle

A

supination

198
Q

Function of extensor digiti minimi

A

extends fifth finger at MCP joint

199
Q

What is the nerve supply to the supinator muscle?

A

Radial nerve

200
Q

Where does the radial nerve divide?

A

Cubital fossa

Divides into superficial and deep branches

Deep branch aka posterior interosseous nerve
Superficial is sensory and distributed to skin on dorsum of hand

201
Q

What are the boundaries of the anatomical snuff box?

A

Laterally; APB and EPB

Medially; EPL

202
Q

What is the anatomical snuff box?

A

shallow depression on lateral aspect of wrist when thumb fully extended

203
Q

Which bones can be felt in the floor of the snuff box?

A

scaphoid

trapezium

204
Q

Which artery lies on floor of snuff box?

A

radial artery

205
Q

What is the main action of extensor pollicis longus?

A

Extension thumb

206
Q

What is the main action of extensor pollivis brevis?

A

Extension thumb MCPJ

207
Q

What is the function of abductor pollicis longus?

A

Abduction thumb

208
Q

What are the rotator cuff muscles?

A

Supraspinatous
Infraspinatous
Teres minor
Subscapularis

209
Q

What is the innervation of teres major?

A

lower subscapular nerve

210
Q

What is the innervation of teres minor?

A

Axillary nerve

211
Q

What is the innervation of supraspinatous?

A

Suprascapular nerve

212
Q

What is the innervation of infraspinatous?

A

Suprascapular nerve

213
Q

What is the innervation of the subscapularis?

A

upper and lower subscapular nerves

214
Q

What is the function of teres minor?

A

Lateral rotation of arm

215
Q

What are the bones of the foot?

A
Calcaneous
Talus (under tibia)
Navicular (under talus)
Cuneiform (under navicular - medial)
Cuboid (lateral)
216
Q

What type of joint are the metacarpophalangeal joints?

A

Synovial condylar

217
Q

What type of joints are the carpometacarpal joints?

A

Synovial plane

EXCEPT thumb is synovial saddle

218
Q

What type of joint are the metatarsophalangeal joints?

A

Synovial condylar

219
Q

What type of joint are the tarsometatarsal joints?

A

Synovial plane

220
Q

What muscles does the common fibular nerve supply?

A

short head biceps femoris

221
Q

What structures pass posteriorly to medial malleolus?

A

Tom Dick And very Nervous Harry

Tibialis posterior tendon
flexor Digitorum longus
Artery (post tibial)
Vein (post tibial)
Nerve (tibial)
Hallucis longus