Quiz 2 Practice Questions

Question 1

What blood vessels perfuses the medial head of the triceps?

Answer 1

profunda brachii branch of the brachial artery

Question 2

What blood vessel perfuses the origin of the ECRL?

Answer 2

radial recurrent branch of the radial artery

Question 3

What spinal level(s) are being assessed by tapping the triceps tendon?

Answer 3

C6-C7

Question 4

What spinal level(s) are being assessed by tapping the biceps tendon?

Answer 4

C5-C6

Question 5

What is the anatomical relationship between the flexor retinaculum to the palmer cutaneous branch of the median nerve?

Answer 5

posterior

Question 6

What is the anatomical relationship between the superficial branch of the radial nerve to the brachioradialis?

Answer 6

medial

Question 7

What is the anatomical relationship between the insertion of the biceps tendon to the radial artery?

Answer 7

lateral

Question 8

What is the relationship between the ulnar nerve to the ulnar artery in Guyon’s canal?

Answer 8

medial

Question 9

What is the relationship between the tendon of the 3rd lumbrical to the proximal phalanyx of the ring finger?

Answer 9

lateral

Question 10

What embryonic germ layer gives rise to the Schwann cells?

Answer 10

neuroectoderm

Question 11

What embryonic germ layer gives rise to the lactiferous ducts?

Answer 11

ectoderm

Question 12

What does the notochordal canal do?

Answer 12

nothing

Question 13

What germ layer does somatopleure come from?

Answer 13

ectoderm (referring to the body wall)

Question 14

What germ layer is dermis derived from?

Answer 14

mesoderm

Question 15

What germ layer is epidermis derived from?

Answer 15

ectoderm

Question 16

You find a patient with:

loss of abduction of the ring, middle and little finger

good flexion at the 4th and 5th DIP joints

strong wrist flexion

where is the lesion?

Answer 16

ulnar nerve lesion distal to the muscular innervation of FDP, lesion is in Guyon’s canal

Question 17

You find a patient with:

weak abduction of her left arm

paresthesia over the lateral left arm

weak elbow flexion in the left arm

no problem retracting the scapula

where is the lesion?

Answer 17

superior trunk (C5-C6) of brachial plexus

Question 18

Trace a drop of blood from the aorta to the right scaphoid bone

Answer 18

aorta, brachiocephalic trunk, subclavian artery, axillary artery, brachial artery, radial artery, superficial branch of radial artery

Question 19

What nerve innervates the superficial head of the FPB?

Answer 19

recurrent branch of the median

Question 20

Which nerve innervates the skin of the nail bed of the right pointer finger?

Answer 20

proper digital cutaneous branch of the median nerve

Question 21

Dupuytren’s contracture is a disease of the?

Answer 21

palmer apopneurosis

Question 22

Which muscle usually contributes to the pain associated with lateral epicondylitis?

Answer 22

ECRB

Question 23

Name the structures located in each extensor compartment at the level of the distal forearm

Answer 23

1: APL and EPB tendon
2: ECRL and ECRB tendon
3: EPL tendon
4: ED and EI tendon
5: EDM tendon
6: ECU tendon

Question 24

What patient assessment should you perform to confirm a diagnosis of cubital tunnel syndome?

Answer 24

test for “OK” sign

Question 25

What is the blood supply to the proximal attachment of the ECRL?

Answer 25

radial recurrent artery

Question 26

Which nerve supplies sensory innervation to the skin over the anatomical snuff box?

Answer 26

superficial radial nerve

Question 27

Which nerve provides prioprioreceptive innervation of the 3rd DIP joint?

Answer 27

median

Question 28

Which nerve provides innervation to the 3rd lumbrical?

Answer 28

deep branch of the ulnar

Question 29

anatomical relationship of median nerve to the brachial artery at the cubital fossa

Answer 29

medial

Question 30

anatomical relationship of the intercostal vein to the intercostal nerve at ICS4

Answer 30

superior

Question 31

anatomical relationship of the ECRB to the EPB where they cross?

Answer 31

anterior

Question 32

Which structures are found in Guyon's canal?

Answer 32

ulnar nerve and artery

Question 33

Name three functional deficits resulting from traumatic injury to Guyon's canal.

Answer 33

abduction of 5th digit adduction of 2nd, 4th, and 5th digits and thumb flexion of 4th and 5th MP joints; extension of 4th/5th IP joints

Question 34

What is the blood supply to the common flexor tendon?

Answer 34

anterior ulnar recurrent

Question 35

You find a patient with weak pronation of the forearm and weak key pinch, where is the lesion?

Answer 35

anterior interosseous nerve lesion

Question 36

Trace a drop of blood from the heart to the 3rd lumbrical on the right hand.

Answer 36

aorta, brachiocephalic trunk, subclavian artery, axillary artery, brachial artery, ulnar artery, palmar branch of the ulnar artery, 3rd lumbrical

Question 38

Which germ layer gives rise to all skeletal muscles?

Answer 38

embryonic mesoderm

Question 39

Which germ layer gives rise to the epithelial linings of the respiratory and alimentary tracts?

Answer 39

embryonic endoderm

Question 40

Which germ layer gives rise to the eyes?

Answer 40

embryonic ectoderm