M4 Anatomy Flashcards by Hillary Renaud

T/F
In the arm, the ulnar artery sends off the common interosseous branch.

True

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This vein links cephalic and basilic veins in the cubital fossa

a. popliteal
b. transverse humeral
c. basocephalic
d. median cubital

d. median cubital

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This branch of the brachial plexus directly off the root will run down the medial border of the scapula:

a. dorsal scapular
b. axillary
c. median
d. radial

a. dorsal scapular

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T/F
The basilic vein starts at the lateral side of the dorsal arch of the hand

False.
Medial side of dorsal arch

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This nerve branch of the posterior cord of the brachial plexus wraps posteriorly around the shaft of the humerus:

a. phrenic
b. radial
c. ulnar
d. axillary

b. radial

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Which is a branch of the second part of the axillary artery?

a. anterior circumflex humeral artery
b. lateral thoracic artery
c. posterior circumflex humeral artery
d. superior thoracic artery

b. lateral thoracic artery

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The root supply of the long thoracic nerve is:

a. C7
b. C5-7
c. C6-8
d. C5-T1

b. C5-7

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The axillary nerve is primarily from what roots?

a. C5-T1
b. C8-T1
c. C7-T1
d. C5-6

d. C5-6

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This nerve supplies the biceps brachii muscle:

a. ulnar
b. musculocutaneous
c. median
d. radial

b. musculocutaneous

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What is the origin of the brachial plexus?

a. C5-T1
b. C4-C8
c. C6-C8
d. C5-C8

a. C5-T1

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Name the different regions of the brachial plexus in the correct order

a. roots, divisions, cords, trunks, branches
b. roots, cords, divisions, branches, trunks
c. roots, trunks, divisions, cords, branches
d. trunks, divisions, branches, cords, roots

c. roots, trunks, divisions, cords, branches

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Which of the following is not a branch of the roots of the brachial plexus?

a. scalenes and longus colli (C5-8)
b. phrenic nerve (C5)
c. dorsal scapular nerve (C5)
d. subclavius (C5-6)
e. long thoracic nerve (C5-7)

d. subclavius (C5-6) - is a branch of the trunks

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Name the two branches of the trunks of the brachial plexus.

a. subclavius (C5-6), suprascapular nerve (C5-6)
b. phrenic nerve (C5), dorsal scapular nerve (C5)
c. phrenic nerve (C5), long thoracic nerve (C5-7)
d. subclavius (C5-6), dorsal scapular nerve (C5)

a. subclavius (C5-6) and suprascapular nerve (C5-6)

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T/F
The roots and trunks of the brachial plexus lie in the anterior triangle of the neck between the scalenus anterior and medius muscles.

False
The roots and trunks of the brachial plexus lie in the posterior triangle of the neck between the scalenus anterior and medius muscles.

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T/F
Divisions of the brachial plexus lie behind the clavicle in the apex of the axilla.

True

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Cords and branches of the brachial plexus are related to the _____ artery.

a. cervical
b. axillary
c. internal thoracic
d. ulnar

b. axillary

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The Axillary Nerve (C5-6) passes through the quadrangular space, accompanied by the ____________ vessels.

posterior circumflex humeral vessels

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The axillary nerve ends deep to the deltoid and divides into ________ branches.

a. medial and lateral
b. superior and inferior
c. anterior and posterior
d. superior and lateral

c. anterior and posterior

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The root value of the suprascapular nerve is:

a. C5-6
b. C4-5
c. C5-8
d.C3-5

a. C5-6

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Which nerve is muscular to supraspinatus and infraspinatus?

a. median nerve
b. axillary nerve
c. musculocutaneous nerve
d. suprascapular nerve

d. suprascapular nerve

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Musculocutaneous Nerve root is from C_ - C_ and is a _____ cord of the brachial plexus

a. C3-6, lateral
b. C5-7, lateral
c. C5-7 medial
d. C4-6 medial

b. C5-7, lateral

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The musculocutaneous nerve is muscular to which muscles?

a. biceps
b. brachialis
c. coracobrachialis
d. all of the above

all of the above

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What is the root value for the median nerve?

a. C5-T1
b. C5-C8
c. C6-C8
d. C7-T3

a. C5-T1

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T/F
The median nerve in the arm has a medial and lateral root.

True
Lateral root C5-7, medial root C8-T1

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The median nerve enters the forearm by passing between the 2 heads of a. extensor carpi radialis b. flexor digitorum profundus c. brachioradialis d. pronator teres

d. pronator teres

In the palm, the median nerve enters deep to the flexor retinaculum through the ______ a. carpal tunnel b. flexor digitorum superficialis muscle c. tarsal tunnel d. palmar aponeurosis

a. carpal tunnel

Carpal tunnel syndrome occurs because of the ____ nerve.

median

Root value for the ulnar nerve: a. C5-T1 b. C7-T1 c. C6-C7 d. C5-C7

b. C7-T1

The ulnar nerve pierces the medial intermuscular septum with the superior ulnar collateral artery to reach the ______ compartment of the arm a. medial b. lateral c. anterior d. posterior

d. posterior

The Ulnar Nerve enters the forearm behind the _________ of the humerus by passing between the 2 heads of the flexor carpi ulnaris muscle. a. lesser tubercle b. body c. medial epicondyle d. lateral epicondyle

c. medial epicondyle

T/F In the hand, the ulnar nerve is lateral to the pisiform and hook of hamate, and medial to the ulnar artery.

True

What nerve is compressed at the elbow to create cubital tunnel syndrome? a. median b. radial c. ulnar

c. ulnar nerve

Root value of radial nerve a. C4-C7 b. C5-T1 c. C6-T1 d. C5-C6

b. C5 - T1

Which nerve is the continuation of the posterior cord and is the largest branch of the brachial plexus?

Radial nerve

The radial nerve descends on all muscles attached to the radius. What muscle does not belong? a. supinator b. pronator teres c. flexor digitorum superficialis d. extensor pollicis brevis e. flexor pollicis longus

d. extensor pollicis brevis

T/F The deep terminal branch of the radial nerve gives 2 cutaneous branches and is mainly sensory.

False. The deep terminal branch of the radial nerve (posterior interosseous nerve) gives no cutaneous branches and is mainly motor

An injury to the radial nerve in the axilla will cause: a. triceps and muscles in the posterior compartment to be paralyzed b. triceps and muscles in the posterior compartment will be weakened c. biceps and muscles in the anterior compartment to be paralyzed d. biceps and muscles in the anterior compartment to be weakened

a. triceps and muscles in the posterior compartment to be paralyzed

A radial nerve injury in the radial groove will cause: a. triceps and muscles in posterior compartment paralyzed b. triceps weakened, not paralyzed, posterior compartment of forearm paralyzed c. triceps and muscles in the posterior compartment weakened d. biceps and muscles in the anterior compartment paralyzed

b. triceps weakened, not paralyzed, posterior compartment of forearm paralyzed

T/F The deep branch of the radial nerve is both a sensory and motor nerve.

False. It is a motor nerve.

T/F The superficial branch of the radial nerve is only a sensory nerve and a lesion would cause sensation loss to the dorsal surface of the lateral 3 1/2 digits and associated palm area.

True

Klumpke's paralysis is caused by a lesion of the ___________ of the brachial plexus. It causes loss of flexion and extension of all intrinsic muscles of the hand. a. lower trunk b. upper trunk c. lateral trunk d. medial trunk

a. lower trunk

The axillary artery begins as a continuation of the _____ artery.

subclavian

At the lower border of which muscle is the termination of the axillary artery? a. subscapularis b. teres major c. teres minor d. infraspinatus

b. teres major

The termination of the axillary artery forms the _____ artery.

brachial

The axillary artery is divided by pec minor into 3 parts (called: 1st part, 2nd part, and 3rd part, respectively): a. around, in, out pec minor b. in, around, out pec minor c. before, superficial, after pec minor d. before, deep and after pec minor

d. before, deep and after pec minor

T/F In regards to the axillary artery: The first part gives one branch: superior thoracic artery. The second part gives two branches: thoracoacromial artery, lateral thoracic artery.

True

Axillary artery: third part gives three branches. Which of the following does not belong: a. subscapular b. anterior circumflex humeral artery c. posterior circumflex humeral artery d. lateral thoracic artery

d. lateral thoracic artery

T/F The thoracoacromial artery (of the branch of the 2nd part of the axillary artery) divides into 4 branches: acromial, pectoral, clavicular, and deltoid branches.

True

In females, the _____ artery gives lateral mammary branches to supply the breast. a. medial thoracic b. superior thoracic c. lateral thoracic d. thoracoacromial

c. lateral thoracic

Which of the following arteries does NOT anatomose around the acromion process of the scapula? a. thoracoacromial b. suprascapular c. posterior circumflex d. dorsal scapular

d. dorsal scapular (suprascapular, circumflex scapular, and dorsal scapular artery anastomose around the scapula.)

Brachial artery begins at the _____ artery and terminates at the neck of the radius by dividing into ____ and _____ arteries. a. subclavian - radial and ulnar b. subclavian - ulnar and median c. axillary - radial and ulnar c. axillary - ulnar and median

c. axillary - radial and ulnar

T/F There are 3 branches to the profunda brachii artery: nutrient artery to humerus, terminal anterior branch and terminal posterior branch.

False. 4 branches nutrient artery to humerus, terminal anterior branch, terminal posterior branch and ascending (deltoid) branch

T/F The radial artery is the larger of the two terminal branches of the brachial artery.

False. It is the smaller of the two terminal branches

T/F The arteries of the palm of the hand are terminations of the ulnar and radial arteries, which form 2 arches in the hand; the superficial and deep palmar arches (respectively)

True

______ is the link between ulnar and radial arteries and supplies the dorsum of the medial 3 1/2 fingers via the 3 dorsal metacarpal arteries. a. anterior carpal arch b. dorsal (posterior) carpal arch

b. dorsal (posterior) carpal arch

Name the missing superficial vein in the upper limb Dorsal venous arch cephalic vein ______ vein medial cubital vein median vein of the forearm

basilic

T/F The dorsal venous arch drains into the cephalic vein laterally and basilic vein medially.

True

T/F Deep veins of the forearm are commonly present in pairs and they drain their blood into the superficial veins.

True

Deep veins of the hand The superficial palmar venous plexus receives ______ The deep palmar venous plexus receives _______ palmar metacarpal veins. a. common palmar digital veins b. palmar metacarpal veins

a, b, respectively

Name the 5 groups of lymph nodes in the axilla a. anterior, posterior, lateral, medial, central b. anterior, posterior, lateral, central, apical c. anterior, posterior, central, lower, superficial d. superficial, deep, anterior, posterior, central

b. anterior (pectoral), posterior (scapular), lateral, central, apical (infraclavicular)

Match the structure to its arterial supply 1. clavicle 2. radius 3. ulna a / b. nutrient branch of anterior interosseous artery, branches from anterior and posterior carpal arches to the lower part c. branch of suprascapular artery

1. c 2 a / b 3. a / b

Name the boundaries of the axilla (6)

apex, base, and 4 walls (anterior, posterior, medial and lateral)

T/F The ulnar nerve passes deep, and the median nerve passes superficially to the flexor retinaculum.

False. Ulnar - superficial Median - deep

______ can be identified when the thumb is abducted and extended.

the anatomical snuff box

The anatomical snuff box contains the ____ artery. a. ulnar b. median c. radial

c. radial

Which of the following is not supplied by the deep branch of the ulnar nerve? a. short muscles of the thumb b. short muscles of little finger c. palmaris brevis d. lumbricals e. interosseii

palmaris brevis is supplied by the superficial terminal branch of the ulnar nerve. Note: the other structures have more supplies than the deep branch - it is just one of several.

Following an anterioinferior dislocation of the shoulder, what nerves are susceptible to injury?

The axillary nerve may be injured by direct compression of the humeral head as it passes through the quadrangular space Brachial plexus injuries are unusual.

An injury to the ________ nerve will lead to paralysis of the serratus anterior muscle, resulting in winging of the scapula. a. long thoracic b. axillary c. suprascapular d. ulnar

a. long thoracic