Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Human Anatomy MSc Sheffield - trunk and limb > Arm > Flashcards

Arm Flashcards

1
Q

Anatomically where is the arm?

A

The upper half of the upper limb, between the shoulder and the antecubital fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the three heads of triceps brachii?

A

Caput longum (long head), caput mediale (medial head), caput laterale (lateral head)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the origins of triceps brachii?

A

Long head: infraglenoid tubercle
Medial head: posterior humerus - inferior to radial nerve
Lateral head: posterior humerus - superior to radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the insertion of triceps brachii?

A

Olecranon of the ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the innervation to triceps brachii?

A

Radial nerve (C6-8) except lateral head which is axillary nerve (C5,6)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the blood supply to the triceps brachii?

A

Brachial artery profunda

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the actions of triceps?

A

extension at the elbow, and extension and adduction at the shoulder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the nerve roots of the radial nerve?

A

C5-T1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which muscles does the radial nerve innervate?

A

Triceps brachii and extensor muscles of the forearm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which part of the upper limb does the radial nerve provide sensation to?

A

Posterior arm and forearm, lateral aspect of dorsum of the hand, lateral 3 and 1/2 digits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which artery is the brachial artery a continuation of?

A

The axillary artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Does the brachial artery lie anterior or posterior to the humerus?

A

Anterior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Where is the radial groove?

A

On the posterior aspect of the humerus, running obliquely from medial to lateral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Where does the radial nerve bifurcate?

A

At the anterior aspect of the antecubital fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where does the brachial plexus come out of the neck?

A

Between the anterior and middle scalene muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which veins converge to form the axillary vein?

A

Brachial and basilic veins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which vein does the axillary vein drain into?

A

The subclavian vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

At what landmark does the axillary vein start?

A

The lower border of teres major

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which vein does the cephalic vein drain into?

A

The axillary vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Where does the cephalic vein drain into the axillary vein?

A

Beneath the scapula at the level of the 1st rib

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which branch comes off the axillary artery in the first segment?

A

Superior thoracic artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Which branches come off the axillary artery in the second segment?

A

Thoracoacromial artery, lateral thoracic artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Which branches come off the axillary artery in the third segment?

A

Subscapular artery (circumflex scapular and thoracodorsal), posterior circumflex humoral, anterior circumflex humoral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What defines the parts of the axillary artery?

A

1st: from 1st rib to medial border of pec minor
2nd: behind pec minor
3rd: lateral border of pec minor to superior border of teres major

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Where does the axillary artery become the brachial artery?

A

At the inferior border of teres major

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the mneumonic to remember the branches of the axillary artery?

A

Screw the lawyer save a patient
superior thoracic, thoracoacromial, lateral thoracic, subscapular, anterior and posterior circumflex humeral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What are the branches of the axillary artery?

A

superior thoracic, thoracoacromial, lateral thoracic, subscapular, anterior and posterior circumflex humeral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What are the two main branches of the subscapular artery?

A

Circumflex scapular and thoracodorsal arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Which muscles does the musculocutaneous nerve innervate?

A

Coracobrachialis, biceps brachii and brachialis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What are the cords of the brachial plexus named in relation to?

A

The axillary artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What are the three cords of the brachial plexus?

A

Medial, posterior and lateral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Which cord of the brachial plexus does the musculocutaneous nerve come from?

A

The lateral cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Which nerve pierces coracobrachialis?

A

The musculocutaneous nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Which area of the skin does the musculocutaneous nerve supply?

A

The anterolateral forearm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Which cords of the brachial plexus is the median nerve derived from?

A

The medial and lateral cords

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Which muscles does the median nerve supply?

A

The flexor muscles in the forearm (except flexor carpi ulnaris and ulnar head of flexor digitorum profundus), muscles of the thenar eminence and radial two lumbricals

37
Q

Which area of the skin does the median nerve supply?

A

Palm, lateral 3 and 1/2 digits

38
Q

Which cord of the brachial plexus forms the ulnar nerve?

A

The medial cord

39
Q

Which muscles does the ulnar nerve supply?`

A

Flexor carpi ulnaris, medial half of flexor digitorum profundus, intrinsic muscles of the hand except LOAF

40
Q

What does LOAF stand for?

A

Lateral two lumbricals, opponens pollicis, abductor pollicis brevis, flexor pollicis brevis

41
Q

What area of the skin does the ulnar nerve provide sensation to?

A

The medial 1 and 1/2 fingers, and the medial aspect of the dorsum of the hand

42
Q

Where does the lateral pectoral nerve arise from?

A

The lateral cord of the brachial plexus

43
Q

Where does the medial pectoral nerve arise from?

A

The medial and lateral cord of the brachial plexus

44
Q

What are the two terminal branches of the posterior cord of the brachial plexus?

A

The axillary and radial nerves

45
Q

Which three smaller branches come off the posterior cord of the brachial plexus?

A

The upper and lower subscapular nerve and the thoracodorsal nerve

46
Q

Which three smaller branches come off the medial cord of the brachial plexus?

A

The medial pectoral nerve, medial brachiocutaneous and the medial antebrachial cutaneous nerve

47
Q

Which nerve is most likely to be injured by an injury to the glenohumeral joint?

A

The axillary nerve

48
Q

What muscles does the axillary nerve supply?

A

Deltoid, teres minor, lateral head of triceps brachii

49
Q

Which areas does the axillary nerve provide sensory innervation from?

A

The glenohumeral joint, skin over the deltoid region

50
Q

Which muscles does the radial nerve innervate?

A

Triceps brachii, anconeus, brachioradialis, and the muscles in the extensor compartment of the forearm

51
Q

Which area of skin does the radial nerve provide sensation to?

A

posterior arm and forearm, thenar eminence and dorsal aspect of the radial 3 and 1/2 digits

52
Q

Which muscle does the thoracodorsal nerve supply?

A

Latissimus dorsi

53
Q

Which muscle does the upper subscapular nerve innervate?

A

Subscapularis

54
Q

Which muscles does the lower subscapular nerve innervate?

A

Subscapularis and teres major

55
Q

Which nerve innervates teres minor?

A

The axillary nerve

56
Q

Which nerve innervates deltoid?

A

The axillary nerve

57
Q

What are the attachments of coracobrachialis?

A

O: coracoid process of the scapula
I: Anteromedial surface of the humeral shaft

58
Q

What is the action of coracobrachialis?

A

Adduction and flexion of the arm at the shoulder joint

59
Q

What is the innervation to coracobrachialis?

A

Musculocutaneous nerve

60
Q

What are the attachments of brachialis?

A

O: Distal half of the anterior surface of the humerus
I: coranoid process of the ulna, ulna tuberosity

61
Q

What is the action of brachialis?

A

Flexion of the forearm at the elbow joint

62
Q

What is the innervation to brachialis?

A

musculocutaneous (C5,6) and radial nerve (C7)

63
Q

Which muscle makes up the floor of the cubital fossa?

A

Brachialis

64
Q

What are the three muscles of the anterior compartment of the arm?

A

Biceps brachii, brachialis, coracobrachialis

65
Q

What are the origins of biceps brachii?

A

Long head: supraglenoid tubercle of the scapula
Short head: coracoid process of the scapula

66
Q

What are the insertions of biceps brachii?

A

Radial tuberosity of the forearm and the deep fascia of the forearm

67
Q

Which nerve supplies biceps brachii?

A

Musculocutaneous

68
Q

What is the clinical significance of the bicipital aponeurosis?

A

It protects the brachial artery and median nerve in phlebotomy

69
Q

What is the bicipital aponeurosis?

A

A fibrous band from the inferior part of the biceps tendon running transversely across the ulna to merge with the deep fascia. attaches to radius

70
Q

What are the five main terminal branches of the brachial plexus?

A

Musculocutaneous, axillary, radial, median, ulnar nerve

71
Q

Which muscle does the musculocutaneous nerve pass through?

A

Coracobrachialis

72
Q

What is the path of the median nerve?

A

Down the anterior arm passing between the tendons of biceps brachii and brachialis, into the forearm passing between the heads of pronator teres and through the carpal tunnel

73
Q

What is the path of the ulnar nerve?

A

passes along the medial aspect of the arm, passing behind the medial epicondyle in the groove for ulnar nerve, it then moves into the ulnar side of the anterior compartment and into the hand

74
Q

What are the two main branches of the brachial artery?

A

The radial and ulnar arteries

75
Q

Where does the brachial artery bifurcate?

A

Just below the cubital fossa

76
Q

Where do the radial and ulnar collateral branches come off?

A

The brachial artery, they come off 1/3 down the humerus and anastamose with the radial and ulnar branches respectively

77
Q

What are the four main veins that drain the forearm?

A

Radial veins, ulnar veins, basilic and cephalic veins

78
Q

What is the vein that crosses the cubital fossa?

A

Median cubital vein

79
Q

What are the two main veins that drain the arm?

A

The basilic (bottom) and cephalic (most superior) veins

80
Q

What does the basilic vein drain into?

A

The axillary vein

81
Q

What does the cephalic vein drain into?

A

The axillary vein

82
Q

What are the nerve roots to biceps brachii?

A

C5, C6 - pick up sticks

83
Q

What are the nerve roots to deltoid?

A

C5,6

84
Q

What are the nerve roots to triceps?

A

C4,C5

85
Q

What are the nerve roots to hand muscles?

A

C8, T1

86
Q

Which ligament keeps the head of the radius connected to the radial notch of the ulna?

A

The annular ligament

87
Q

Which structure separates the ulnar artery from the median nerve?

A

Pronator teres

88
Q

What is the secondary function of biceps brachii?

A

Supinator

89
Q

What muscle is considered to be the initiator of abduction in the arm?

A

Supraspinatus

Human Anatomy MSc Sheffield - trunk and limb (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions