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Anatomy > Lecture 10: Brachium, Cubital fossa > Flashcards

Lecture 10: Brachium, Cubital fossa Flashcards

1
Q

Innervation to biceps brachii

A

Musculocutaneous nerve C5-6

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2
Q

Median nerve supplies

A

Flexor muscles on the radial side of the forearm

Does not supply muscles in the arm

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3
Q

Lateral antebrachial cutaneous nerve is from

A

Termination of musculocutaneous nerve

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4
Q

Innervation to posterior brachial compartment

A

Radial nerve

Functional neurological level - C7

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5
Q

Median nerve travels with what, and what is its relationship to that structure in space

A

Brachial artery

Lateral to artery in upper half of brachium, medial to artery in lower half of brachium

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6
Q

Vascularization of posterior brachial compartment

A

Deep brachial artery

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7
Q

Action of coracobrachialis

A

Weakly flexes and adducts arm

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8
Q

Posterior cutaneous nerve of arm is from

A

From radial nerve

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9
Q

Action of biceps brachii

A

Supination of forearm

Assists in forearm flexion

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10
Q

Distal attachment of anconeus

A

Lateral surface of olecranon process

Superior part of posterior surface of ulna

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11
Q

Nerves passing through posterior brachial compartment but not innervating

A 
Median nerve
Ulnar nerve (through proximal part)
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12
Q

Musculocutaneous nerve pierces

A

Coracobrachialis in upper half of brachium

Fascia lateral to biceps tendon

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13
Q

Innervation to coracobrachialis

A

Musculocutaneous nerve C6-7

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14
Q

Cubital fossa superior base

A

Line between two humeral epicondyles

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15
Q

Musculocutaneous nerve innervates

A

Muscles of anterior brachial compartment

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16
Q

Muscles of posterior brachial compartment

A

Triceps brachii

Anconeus

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17
Q

Cubital anastomosis

A 
Brachial artery-Ulnar artery
Deep brachial artery-Radial and interosseous arteries
Superior ulnar col.-Posterior ulnar rec.
Inferior ulnar col.-Anterior ulnar rec.
Radial col.-Radial rec.
Middle col.-Interosseous rec.
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18
Q

Cubital fossa medial boundary

A

Pronator teres muscle

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19
Q

Proximal attachment brachialis

A

Distal half of humerus and intermuscular septum

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20
Q

Triceps lateral and medial heads are _____-joint muscles

Triceps long head is _____-joint muscle

A

Lateral and medial heads are single-joint muscles

Long head is multi-joint muscle

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21
Q

Coracobrachialis is pierced by

A

Musculocutaneous nerve

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22
Q

Brachial artery is a direct continuation of the _____ and begins at

A

Axillary artery

Brachial A. begins at inferior border of teres major

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23
Q

Median nerve crosses ______ superficially

A

Median nerve crosses cubital fossa superficially along with the brachial artery, deep to the bicipital aponeurosis

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24
Q

Radial nerve pierces

A

Lateral intermuscular septum, distal to deltoid insertion

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25
Q

Branches of brachial artery

A

Deep brachial artery
Superior ulnar collateral artery-to posterior ulnar rec.
Inferior ulnar collateral artery-to anterior ulnar rec.

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26
Q

Action of brachialis

A

Main flexor of forearm

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27
Q

Cubital fossa roof

A

Skin, superficial & deep fascia, bicipital aponeurosis

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28
Q

Radial nerve supplies

A

Extensor muscles in posterior compartment of brachium as well as extensor muscles of wrist and hand (all extensor muscles of upper extremity)
Brachioradialis muscle

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29
Q

Distal attachment brachialis

A

Tuberosity of coronoid process

30
Q

Distal attachment biceps brachii

A

Tuberosity of radius

31
Q

Proximal attachment anconeus

A

Posterior aspect of lateral epicondyle of humerus

32
Q

Ulnar nerve supplies

A

Flexor muscles on the ulnar side of the forearm

33
Q

Medial brachial cutaneous nerve is from

A

Direct branch from medial cord

34
Q

Function of muscles of anterior brachial compartment

A

Forearm flexors

Biceps also flexes shoulder and supinates forearm

35
Q

Cubital fossa floor

A

Supinator and brachialis muscles

36
Q

Ulnar nerve course through arm

A

Medial to brachial artery
Runs with superior ulnar collateral artery
Pierces medial intermuscular septum
Enters posterior compartment of brachium
Passes around medial epicondyle
Passes into forearm between two heads of flexor carpi ulnaris muscle

37
Q

Proximal attachment biceps brachii- long and short heads

A

Short head from tip of coracoid process

Long head from supraglenoid tubercle of scapula

38
Q

Radial nerve divides into

A

Superficial and deep branches near lateral epicondyle

39
Q

Radial branches in distal third of arm

A

Branch to brachioradialis
Branch to extensor carpi longus
Articular branches to elbow joint

40
Q

Proximal attachment coracobrachialis

A

Tip of coracoid process

41
Q

Vascularization of anterior brachial compartment

A

Brachial artery

Basilic vein and venae comitantes

42
Q

Radial nerve passes into forearm between

A

Between the brachialis muscle medially and the brachioradialis muscle laterally

43
Q

Distal attachment of triceps

A

Olecranon process

44
Q

Radial nerve branches in the axilla and upper third of arm

A

Muscular branch to long and medial heads of triceps

Posterior brachial cutaneous nerve

45
Q

Lateral intermuscular septum

A

From subcutaneous sheath to humerus

Separates muscles of anterior arm from lateral side of triceps complex

46
Q

Innervation to brachialis

A

Musculocutaneous nerve C5-6

47
Q

Action of anconeus

A

Abducts ulna during pronation of forearm

Assists triceps during forearm extension

48
Q

Proximal attachment of lateral head triceps

A

Posterior surface of humerus above radial groove

49
Q

Distal attachment of coracobrachialis

A

Middle third of medial border of humerus

50
Q

Innervation to anterior brachial compartment

A

Musculocutaneous nerve

Functional neurological level C5-6

51
Q

Cubital fossa contents- lateral to medial

A 
Biceps tendon T-tendon
Brachial artery A-artery
Median nerve  N-nerve
Bifurcation of brachial/radial arteries
Brachial veins
Bicipital aponeurosis
Radial nerve
52
Q

Radial branches in radial groove in middle third of arm

A

Branch to lateral and medial triceps and anconeus
Lower lateral brachial cutaneous nerve
Posterior cutaneous nerve of forearm

53
Q

Nerves that pass through anterior brachial compartment but do not innervate area

A 
Median nerve
Ulnar nerve (through proximal part)
54
Q

Proximal attachment of long head triceps

A

Infraglenoid tubercle of scapula

55
Q

Function of muscles of posterior brachial compartment

A

Forearm extensors
Long head of triceps can extend shoulder
Synergists in forearm supination

56
Q

Venae comitantes

A

Veins that parallel arteries-
Usually two per artery
Countercurrent heat exchange

57
Q

Superior lateral cutaneous nerve of arm is from

A

From axillary nerve

58
Q

Musculocutaneous nerve continues as

A

Lateral cutaneous nerve of the forearm, supplying skin on lateral forearm as far as wrist

59
Q

Action of triceps

A

Forearm extension

Long head also assists in arm extension

60
Q

Radial nerve descends

A

Posterior to the axillary artery, spirals around posterior surface of humerus in the spiral groove along with the brachial artery

61
Q

Median cubital vein

A

Connects cephalic and basilic vein
Extends diagonally across bicipital aponeurosis
Receives blood from median antebrachial vein
Drains blood from palmar hand

62
Q

Proximal attachment of medial head triceps

A

Posterior surface of humerus below radial groove

63
Q

Innervation of anconeus

A

Radial nerve C7-8, T1

64
Q

Basilic vein

A

Medial continuation of dorsal venous arch
Ascends in superficial fascia along lateral aspect of arm and forearm to middle of arm
Pierces deep fascia and ascends in upper aspect of arm in deep fascia
Joins venae comitantes to form axillary vein (usually near inferior border of teres major)

65
Q

Medial intermuscular septum

A

From subcutaneous sheath to humerus

Separates muscles of anterior arm from medial side of triceps complex

66
Q

Posterior cutaneous nerve of forearm is from

A

From radial nerve

67
Q

Medial antebrachial cutaneous nerve is from

A

Direct branch from medial cord

68
Q

Cubital fossa lateral boundary

A

Brachioradialis muscle

69
Q

Cephalic vein

A

Lateral continuation of dorsal venous arch
Ascends in superficial fascia along lateral aspect of forearm and arm
Passes through deltopectoral triangle
Empties into axillary vein

70
Q

Innervation to triceps

A

Radial nerve C6-8

71
Q

Muscles of anterior brachial compartment

A

Biceps brachii
Coracobrachialis
Brachialis

Anatomy (34 decks)

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