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Anatomy 2 > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

T or F: The musculocutaneous nerve is the terminal branch of the medial cord of the brachial plexus.

A

False; ulnar nerve is the terminal branch of medial cord of brachial plexus

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2
Q

Which of the following do NOT form a boundary of the axilla?
A. Pectoralis major and minor
B. Subscapularis, teres major, and lats
C. Serratus anterior
D. Humerus, coracobrachialis and long head of biceps
E. All of the above

A 
E. All of the above!
A - Anterior Wall
B - Posterior Wall
C - Medial Wall
D - Lateral Wall
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3
Q

T or F: The anterior circumflex humeral artery is much larger than the posterior circumflex humeral a.

A

False; Posterior is HUGE

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4
Q 
Which of the following is NOT one of the branches of the 3 parts of the axillary artery?
A. Superior thoracic
B. Lateral thoracic
C. Thoraco-acromial
D. Circumflex scapular
A

D. Circumflex scapular is not a branch

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5
Q

T or F: The superior trunk of the brachial plexus is the only one with nerves branching off of it.

A

True!

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6
Q 
I am a nerve formed by the C5, C6, and C7 nerve roots and I run along the medial wall of the axilla supplying the muscle that forms that wall. Which nerve am I?
A. Dorsal Scapular
B. Long thoracic
C. Suprascapular
D. Nerve to Subclavius
A

B. Long thoracic

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7
Q

T or F: The neurovascular structures in the arm travel in a groove on the medial aspect between the anterior and posterior muscular compartments, called the medial bicipital groove.

A

True!

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8
Q 
Which muscle in the brachium is known as the 'work horse' of elbow flexion?
A. Biceps brachii
B. Brachialis
C. Coracobrachialis
D. Triceps brachii
A

B. Brachialis

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9
Q

T or F: The pisiform is different to the other carpal bones in the proximal row because it attaches anteriorly to the triquetrum. It sits anterior to the proximal row of carpal bones.

A

True

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10
Q 
The tendon of which muscle passes through its own compartment within the carpal tunnel?
A. Flexor carpi radialis
B. Flexor digitorum profundus
C. Flexor pollicis longus
D. Flexor digitorum superficialis
A

A. Flexor carpi radialis

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11
Q

T or F: The median nerve supplies only 4 muscles in the palm of the hand.

A

True

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12
Q 
Which of the following muscles in the palm of the hand is NOT supplied by the median nerve?
A. Opponens pollicis
B. Abductor pollicis brevis
C. Deep part of flexor pollicis brevis
D. 1st and 2nd lumbricals
A

C. Deep part of FPB

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13
Q

T or F: The ECRL and ECRB share a common insertion on the dorsal surface of the base of the second metacarpal.

A

False

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14
Q 
What structure does the tendon of EPL wind around to redirect its pull on the distal phalanx of the thumb?
A. Radial styloid
B. Ulnar styloid
C. Dorsal tubercle of the radius
D. Radial tuberosity
A

C. Dorsal tubercle of the radius

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15
Q

T or F: The sternoclavicular joint is a saddle-type joint but the presence of the intra-articular makes it more like a ball and socket joint.

A

True

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16
Q 
Which of the following are not intrinsic ligaments of the sternoclavicular joint?
A. Anterior sternoclavicular
B. Interclavicular
C. Coracoclavicular
D. Costoclavicular
A

C. Coracoclavicular

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17
Q

T or F: The acromioclavicular joint is a plane joint and is so well-supported by the acromioclavicular ligament, it is rarely injured.

A

False

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18
Q 
Winging of the scapula is when the medial border becomes prominent during shoulder and scapular movements. It would be indicative of injury or weakness of which nerve?
A. Suprascapular
B. Axillary
C. Long thoracic
D. Dorsal Scapular
A

C. Long thoracic

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19
Q

T or F: The glenoid labrum deepens the glenoid cavity to better accept the head of the femur.

A

False; Humerus not femur!

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20
Q 
Which of the following do not reinforce the rotator interval capsule?
A. Coracohumeral ligament
B. Superior glenohumeral ligament
C. Subscapularis tendon
D. Long head of biceps
A

C. Subscapularis tendon

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21
Q

T or F: The elbow joint is really 3 joints which are collectively known as the cubital articulation.

A

True

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22
Q 
What is the normal carrying angle for a woman?
A. <5 degrees
B. 5-10 degrees
C. 10-15 degrees
D. >15 degrees
A

C. 10-15 degrees

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23
Q

Which part of the hand is supplied mainly by the radial artery and which part is supplied mainly by the ulnar artery?

A

Radial - thumb & 1/2 of pointer finger

Ulnar- 1/2 of pointer - 5th digit

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24
Q

What are the Intrinsic muscles of the hand? What do they do?

A

Dorsal interossei; palmar interossei; lumbricals; adductor pollicis; palmaris brevis
Work to improve grip strength along with flexors of forearm

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25
Q

What are the thenar muscles? What do they do?

A

Flexor pollicis brevis (FPB); aBductor pollicis brevis (APB); Opponens pollicis
Control movement of the thumb towards middle of the palm (opposition)

26
Q

Why are the intrinsic mucles of the palm and thenar muscles so important for normal hand function?

A

Allows for fine motor movement like buttoning a shirt or picking up a pin

27
Q

What are the hypothenar muscles (3)? What do they do?

A

Opponens digiti minimi (ODM); flexor digiti minimi brevis (FDMB); Adductor digiti minimi (ADM)
Control the middle finger

28
Q

What does the extensor indicis allow us to do?

A

Point with index finger

29
Q

What is the name of the tubercle/trochlea that the extensor pollicis longus (EPL) hooks around?

A

Lister’s tubercle

30
Q

Which muscles would work to take the hand from pronation back to supination?

A

Biceps brachii and supinator

31
Q

T or F: The extensor carpi radialis brevis and longus (ECRB and ECRL) pass under the tendons of abductor pollicis longus (APL) and extensor pollicis brevis (EPB).

A

True

32
Q

What is the name given to inflammation that occurs at the intersection of the muscle bellies of APL and EPB cross over the ECRL and ECRB?

A

Intersection Syndrome

33
Q

Since the brachioradialis works in mid-pronation, can you think of an important function you need this muscle to do?

A

Allows you to drink your favorite beverage without spilling - crack a tinnie mate!

34
Q

T or F: The ulna bone does not articulate with any of the carpal bones.

A

True

35
Q

What is the clinical importance of the TFCC in the wrist?
A. It binds the head of the ulna to the ulnar notch on the medial side of the distal radius
B. It supports the distal radioulnar joint
C. It separates the joint cavities of the distal radioulnar joint and the radiocarpal joint
D. It provides an articulation with the triquetrum

A

C. It separates the joint cavities of the distal radioulnar joint and radiocarpal joint

36
Q

T or F: The pronator quadratus is unique in that it is the only muscle in the antebrachium that has one attachment only on the ulna and it’s other attachment only on the radius.

A

True

37
Q 
Which of the following muscles in the flexor compartment of the forearm is entirely supplied by the ulnar nerve?
A. Flexor carpi radialis - FCU
B. Flexor digitorun profundus - FDP
C. Pronator teres
D. Flexor carpi ulnaris - FCU
A

D. Flexor carpi ulnaris - FCU
FCR - median n
FDP - both medial and ulnar
PT - median n

38
Q 
Which muscle is more anteriorly placed along the medial lip of the intertubercular groove?
A. Pec Major
B. Long head of biceps
C. Latissimus dorsi
D. Teres major
A

C. Latissiumus dorsi

“The lady lies between 2 Majors”

39
Q 
What is the landmark that signifies the start of the axillary artery?
A. Medial border of pec minor
B. Superior border of first rib
C. Lower border of teres major
D. Inferior surface of clavicle
A

B. Superior border of first rib

40
Q 
Which structure divides the axillary artery into its 3 parts?
A. Pec minor
B. Corocoid process
C. First rib
D. Subscapularis
A

A. Pec minor

41
Q

The brachial plexus is arranged the way that it is so that:
A. It is more difficult for students to learn
B. Individual nerves can reach their intended targets
C. It can work as a force distributor to protect individual nerve roots from excessive stretching forces during upper limb movements
D. Motor and sensory nerve fibers can reach appropriate targets

A

C. It acts as a force distributor

42
Q

The posterior divisions of the brachial plexus form the:
A. Lateral cord of the BP
B. Medial cord of the BP
C. Posterior cord of the BP

A

C. Posterior cord of the BP

43
Q

Which is true of the structure identified by the green dot?
A. Acts in extending the elbow
B. Innervated by the radial nerve
C. Acts in supinating the forearm
D. Component of the floor of the cubital fossa

A

D. Floor of cubital fossa

44
Q

A patient presents with a median nerve injury just distal to the elbow. Which is most likely to result from this injury?
A. Weakness of DIP joint flexion of digits 4 and 5 of the hand
B. Weakness of DIP joint flexion of digits 2 and 3 of the hand
C. Weakness of PIP flexion of digits 2 through 5 of the hand
D. Weakness of MCP joint flexion of digits 2 through 5 of the hand

A

B. Weakness of DIP joint flexion of digits 2 and 3 of the hand

45
Q

A patient presents with ulnar nerve injury just distal to the elbow. Which is most likely to result from this injury?
A. Weakness of DIP joint flexion of digits 4 and 5 of the hand
B. Weakness of DIP joint flexion of digits 2 and 3 of the hand
C. Weakness of PIP flexion of digits 2 through 5 of the hand
D. Weakness of MCP joint flexion of digits 2 through 5 of the hand

A

A. Weakness of DIP joint flexion of digits 4 and 5 of the hand

46
Q 
Pronator quadratus is innervated by:
A. Median n
B. Anterior interosseous n 
C. Radial n
D. Posterior interosseous n
A

B. Anterior Interosseous n

47
Q 
Which of the following is NOT a thenar muscle?
A. Abductor pollicis brevis
B. Adductor pollicis
C. Opponens pollicis
D. Flexor pollicis brevis (FPB)
A

B. Adductor pollicis

48
Q 
Which of the following is NOT a hypothenar muscle?
A. Abductor digiti minimi
B. Flexor digiti minimi brevis
C. Opponens digit minimi
D. Adductor pollicis
A

D. Adductor pollicis

49
Q

Muscles acting on the hand can be divided into 2 groups” extrinsic and intrinsic muscles. Which of the following is NOT correct?
A. Extrinsic muscles are located in the anterior and posterior compartments of the forearm
B. Intrinsic muscles are located within the hand itself
C. Extrinsic muscles produce a forceful grip
D. Intrinsic muscles are responsible for fine motor functions
E. None of the above

A

E. None of the above

50
Q

T or F: ALL of the thenar muscles are innervated by the median nerve.

A

True! All thenar muscles and lumbricals 1 and 2

51
Q

T or F: The radial nerve has NO motor function in the hand.

A

True! Only supplies sensory information through superficial radial branch

52
Q 
Which tendons are affected in De Quervain's tenosynovitis?
A. APL and EPL
B. APL and EPB
C. ECRL and ECRB
D. APB and EPB
A

B. APL and EPB

53
Q 
In which compartment of the wrist are the tendons involved in De Quervain's tenosynovitis?
A. 1st
B. 2nd
C. 4th
D. 6th
A

A. 1st

54
Q

Why is it important for us to understand joint morphology?
A. Knowing the shape and form of joints allows us to understand the movements available at those joints
B. Understanding the shape and form of joints allows us to interpret damage/ injury occurring when movements exceed those normally available at those joints
C. Knowing the shape and form of joints allows us to understand the normal biomechanics of those joints
D. All ofthe above

A

D. All of the above!

55
Q 
A patient presents with pain and weakness with right shoulder flexion and abduction. Which joint might be affected?
A. Sternoclavicular
B. Acromioclavicular
C. Glenohumeral
D. Scapulothoracic
E. Any of the above
A

E. Any of the above

56
Q 
Which of the following ligaments do NOT support the AC joint?
A. Coracoacromial
B. Acromioclavicular
C. Coracoclavicular - trapedoid
D. Coracoclavicular - conoic
A

A. Coracoacromial

57
Q

T or F: The scapulothoracic joint is a synovial joint.

A

False!

58
Q

T or F: THe glenohumeral joint is a ball and socket joint JUST like the hip joint..

A

False!

59
Q 
Which motion of the shoulder most specifically acts to lengthen, via tension, the structure identified in the previous question?
A. Abduction
B. Adduction
C. Extension
D. Flexion
A

B. Adduction

60
Q 
Which of the following is NOT a part of the cubital articulation?
A. Humeroulnar
B. Humeroradial
C. Prozimal radioulnar
D. Distal radioulnar
A

D. Distal radioulnar

61
Q

Which of the following joints allow for forearm pronation/supination?
A. Humeroulnar
B. Humeroradial
C. Proximal radioulnar

A

C. Proximal radioulnar

Anatomy 2 (4 decks)

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