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Anatomy > Brachium > Flashcards

Brachium Flashcards

1
Q

Most proximal portion of the ulna that articualtes with the olecranon fossa of the humerus

A

Olecranon

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2
Q

Portion of the proximal ulna that articulates with the trochlea

A

Trochlear notch

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3
Q

Location on the ulna where the head of the radius articulates, and allow turning/rotation

A

Radial notch

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4
Q

Disc-like structure that sits in the radial notch of the ulna

A

Radius head

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5
Q

Ligaments that sit between the radius and ulna, stabilizing them together so they don’t dislocate

A

Quadrate ligament

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6
Q

Break in the radius, close to the wrist

A

Colles’ fracture

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7
Q

Type of ankle fracture that occurs when one of both of the malleoli, tibia, or fibula bones break

A

Pott’s fracture

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8
Q

Fracture of the humerus that involves an incomplete break

A

Greenstick fracture

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9
Q

Fracture of the humerus where the superior portion of the bone compresses and breaks the inferior portion of the bone. E.g. catching yourself when falling.

A

Impacted fracture

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10
Q

Fracture of the humerus that involves multiple fractures at the same time. Has a more lengthy recovery.

A

Comminuted fracture

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11
Q

Muscles in the anterior compartment of the brachium

A

Biceps brachii, Brachialis, and Coracobrachialis muscles

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12
Q

Divisions of the arm that separate the anterior and posterior groups

A

Humerus, medial and lateral intermuscular septae

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13
Q

Innervation of the anterior compartment muscles of the arm

A

Musculocutaneous nerve

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14
Q

Muscles of the posterior compartment of the arm

A

Triceps brachii muscle

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15
Q

Innervation of the posterior compartment of the arm

A

Radial nerve

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16
Q

Action of the muscles in the anterior compartment of the arm

A

Flexors

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17
Q

Action of the muscles of the posterior compartment of the arm

A

Extensors

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18
Q

Action of the biceps brachii muscle

A

Supinates forearm and when supine, flexes forearm. Short head resists dislocation of shoulder

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19
Q

Innervation of the biceps brachii muscle

A

Musculocutaneous nerve

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20
Q

Part of the biceps brachii muscle that runs through the intertubercular sulcus of the humerus

A

Long head

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21
Q

Number of joints that the biceps brachii is involved in

A

3

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22
Q

Contents of a third head of biceps brachii

A

Bicipital aponeurosis

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23
Q

Part of the biceps brachii that is more medial

A

Short head

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24
Q

Action of the brachialis muscle

A

Main flexor of the forearm in all positions (unaffected by pronation or supination)

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25
Q

Innervation of the brachialis muscle

A

Musculocutaneous and radial nerves (dual innervation)

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26
Q

Action of the coracobrachialis muscle

A

Contributes to flexion and adduction of arm, resists dislocation of the shoulder

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27
Q

Innervation of the coracobrachialis muscle

A

Musculocutaneous nerve

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28
Q

Nerve that pierces the coracobrachialis muscle

A

Musculocutaneous nerve

29
Q

Neurovascular structures that may run deep to the coracobrachialis muscle

A

Median nerve and Brachial artery

30
Q

Action of the triceps brachii muscle

A

Main extensor of the forearm; long head resists dislocation of humerus during adduction

31
Q

Innervation of the triceps brachii muscle

A

Radial nerve

32
Q

Part of the triceps brachii muscle that is the workhorse of forearm extension

A

Medial head

33
Q

Part of the triceps brachii muscle that is recruited against resistance

A

Lateral head

34
Q

Part of the triceps brachii muscle that crosses the glenohumeral joint

A

Long head

35
Q

Most medial portion of the triceps brachii muscle

A

Long head

36
Q

Deepest head/portion of the triceps brachii muscle

A

Medial head

37
Q

Action of the anconeus muscle

A

Assists triceps in extending forearm; stabilizes elbow joint

38
Q

Innervation of the Anconeus muscle

A

Radial nerve

39
Q

The lateral cutaneous nerve of the forearm arises from this nerve

A

Musculocutaneous nerve

40
Q

Nerve in the brachium that runs on the lateral side of the brachial artery before crossing over

A

Median nerve

41
Q

Nerve in the brachium that runs on the medial side of the brachial artery before piercing the medial intermuscular septum

A

Ulnar nerve

42
Q

Nerve in the brachium that runs posterior to the brachial artery

A

Radial nerve

43
Q

Branches of the radial nerve

A

Deep branch (motor) and superficial branch (sensory)

44
Q

The posterior interosseous nerve is a branch of this nerve

A

Radial nerve

45
Q

The anterior interosseous nerve is a branch of this nerve

A

Median nerve

46
Q

Innervation to the cubital fossa

A

Lateral antebrachial cutaneous nerve, anterior interosseous nerve

47
Q

Contraction of the arm when the muscle contracts and flexion occurs

A

Concentric contraction

48
Q

Contraction of the arm when muscle elongation and extension occur

A

Eccentric contraction

49
Q

Contraction of the arm when the muscle contracts with no movement; holding the arm/muscle in place

A

Isometric contraction

50
Q

Medial border of the cubital fossa

A

Pronator teres muscle

51
Q

Lateral border of the cubital fossa

A

Brachioradialis muscle

52
Q

Inferior border of the cubital fossa

A

Junction of pronator teres and brachioradialis muscles

53
Q

Superior border of the cubital fossa

A

Space between humeral epicondyles

54
Q

Roof of the cubital fossa

A

Skin, fascia, aponeurosis, median cubital vein

55
Q

Floor of the cubital fossa

A

Brachialis and supinator muscles

56
Q

Superior starting point of the brachial artery

A

Teres major muscle

57
Q

Inferior end of the brachial artery

A

Beneath the bicipital aponeurosis in the cubital fossa

58
Q

The brachial artery becomes these two branches are passing through the cubital fossa

A

Radial and ulnar arteries

59
Q

Lymphoid structures in the brachial region

A

Cubital nodes in the elbow joint

60
Q

Action of the supinator muscle

A

Supinates forearm; rotates radius to turn palm anteriorly and superiorly (if elbow is flexed)

61
Q

Innervation of the supinator muscle

A

Deep branch of radial nerve

62
Q

Action of the brachioradialis muscle

A

Weak flexion of the forearm

63
Q

Innervation of the brachioradialis muscle

A

Radial nerve

64
Q

Action of the pronator teres muscle

A

Pronates and flexes forearm (at elbow)

65
Q

Innervation of the pronator teres muscle

A

Median nerve

66
Q

The radial and middle collateral arteries arise from this artery

A

Profunda brachii artery

67
Q

The inferior ulnar collateral artery arises from this artery

A

Brachial artery

68
Q

Veins that supply the brachial region

A

Cephalic vein, Radial and basilic veins, Median cubital vein, Large perforating vein, medial antebrachial vein

Anatomy (23 decks)

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