The Body (Nerves & Muscles)

Question 1

Innervation of the Thenar Muscle (thumb)

Answer 1

Median Nerve

Question 2

What is a Thenar?

Answer 2

are group of muscles on the palm & at base of the thumb

Question 3

What innervates the anterior wrist?

Answer 3

Median nerve

Question 4

What part of the arm is most susceptible to ulnar nerve injury?

Answer 4

Elbow

Question 5

Which muscle in the arm is innervated by the radial nerve (supplies upper limbs)

Answer 5

triceps

Question 6

What brachial nerve & musvle is for circumduction of the arm?

Answer 6

Auxiliary (b/c of deltoids)

Question 7

Suspination of radio-ulnar joint?

Answer 7

biceps brachii

Question 8

what muscle adducts the scapula?

Answer 8

rhomboids (minor best answer)

Question 9

what muscle adducts?

Answer 9

trapezious & rhomboids (major, minor)

Question 10

what muscles abducts?

Answer 10

serratus anterior, pectoralis

Question 11

which one does not contributed to the posterior wall of the axilla?

Answer 11

Serratus anterior, Humerus

Question 12

What is the posterior wall?

Answer 12

subscapularis, teres major, latissiumus dorsi, & scapula

Question 13

Innervation that causes rotation of the arm

Answer 13

C5 (doc says C5-C6)

Question 14

If a person can’t flex their wrist, what nerves are invovled?

Answer 14

C6-C7 (Ulnar n., Flexor Carpi Ulnaris m)

Question 15

What innervates the Brachialis (biceps muscles)?

Answer 15

Musculocutaneous (C5-C7)

Question 16

What is the most distal portion of the brachial plexus?

Answer 16

Branches (Musculocutaneous, Auxillary, median, radial, ulnar nerve)

Question 17

Auxillar sheath surrounds the auxillary vein, auxillary artery & 3 cords of the branchial plexus

Answer 17

No trunks/roots of brachial plexus

Question 18

Where do the 4th, 5th, and 6th intercostal veins drain?

Answer 18

Accessory Hemizygous (formed by the 4th-8th intercostal veins)

Question 19

Right superior intercostal muscles drain into the right side of the what?

Answer 19

azygous vein

Question 20

Azygous vein leaves an impression on the what?

Answer 20

right lung

Question 21

What supplies the SA node?

Answer 21

Right Coronary Artery

Question 22

Where is atherosclerosis most common?

Answer 22

Abdominal Aorta

Question 23

What exits the thorax at T12

Answer 23

descending Aorta

Question 24

Toracic duct is behind what?

Answer 24

Esophagus & Aorta

Question 25

Esophagus begins at what level

Answer 25

Cricoid Cartilage (at C6), inferior to the cricothyroid

Question 26

What is posterior to the aorta?

a. Right Kidney
b. Liver
c. Colon (& pancreas are anterior to the abdominal aorta)

Answer 26

a. right kidney

Question 27

What are the visceral arteries of the abdominal/descending aorta?

Answer 27

Celiac Trunk & Inferior Mesenteric

Question 28

Visceral arteries include the celiac trunk, renal & superior/inferior mesenteric except?

Answer 28

not inferior phrenic

Question 29

Direct banch of the Celiac Trunk?

Answer 29

Splenic Artery (also Left Gastric and Common Hepatic A)

Question 30

Hepatic portal vein contains blood from the?

Answer 30

Superior mesenteric & Splenic Vein

Question 31

Hepatic Sinusoid drain what?

Answer 31

Portal Blood to Central Vein