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Anatomy > Lecture 10: Brachium, Cubital fossa > Flashcards

Lecture 10: Brachium, Cubital fossa Flashcards

(71 cards)

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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
Branches of brachial artery
Deep brachial artery Superior ulnar collateral artery-to posterior ulnar rec. Inferior ulnar collateral artery-to anterior ulnar rec.
26
Action of brachialis
Main flexor of forearm
27
Cubital fossa roof
Skin, superficial & deep fascia, bicipital aponeurosis
28
Radial nerve supplies
Extensor muscles in posterior compartment of brachium as well as extensor muscles of wrist and hand (all extensor muscles of upper extremity) Brachioradialis muscle
29
Distal attachment brachialis
Tuberosity of coronoid process
30
Distal attachment biceps brachii
Tuberosity of radius
31
Proximal attachment anconeus
Posterior aspect of lateral epicondyle of humerus
32
Ulnar nerve supplies
Flexor muscles on the ulnar side of the forearm
33
Medial brachial cutaneous nerve is from
Direct branch from medial cord
34
Function of muscles of anterior brachial compartment
Forearm flexors | Biceps also flexes shoulder and supinates forearm
35
Cubital fossa floor
Supinator and brachialis muscles
36
Ulnar nerve course through arm
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
Proximal attachment biceps brachii- long and short heads
Short head from tip of coracoid process | Long head from supraglenoid tubercle of scapula
38
Radial nerve divides into
Superficial and deep branches near lateral epicondyle
39
Radial branches in distal third of arm
Branch to brachioradialis Branch to extensor carpi longus Articular branches to elbow joint
40
Proximal attachment coracobrachialis
Tip of coracoid process
41
Vascularization of anterior brachial compartment
Brachial artery | Basilic vein and venae comitantes
42
Radial nerve passes into forearm between
Between the brachialis muscle medially and the brachioradialis muscle laterally
43
Distal attachment of triceps
Olecranon process
44
Radial nerve branches in the axilla and upper third of arm
Muscular branch to long and medial heads of triceps | Posterior brachial cutaneous nerve
45
Lateral intermuscular septum
From subcutaneous sheath to humerus | Separates muscles of anterior arm from lateral side of triceps complex
46
Innervation to brachialis
Musculocutaneous nerve C5-6
47
Action of anconeus
Abducts ulna during pronation of forearm | Assists triceps during forearm extension
48
Proximal attachment of lateral head triceps
Posterior surface of humerus above radial groove
49
Distal attachment of coracobrachialis
Middle third of medial border of humerus
50
Innervation to anterior brachial compartment
Musculocutaneous nerve | Functional neurological level C5-6
51
Cubital fossa contents- lateral to medial
``` Biceps tendon T-tendon Brachial artery A-artery Median nerve N-nerve Bifurcation of brachial/radial arteries Brachial veins Bicipital aponeurosis Radial nerve ```
52
Radial branches in radial groove in middle third of arm
Branch to lateral and medial triceps and anconeus Lower lateral brachial cutaneous nerve Posterior cutaneous nerve of forearm
53
Nerves that pass through anterior brachial compartment but do not innervate area
``` Median nerve Ulnar nerve (through proximal part) ```
54
Proximal attachment of long head triceps
Infraglenoid tubercle of scapula
55
Function of muscles of posterior brachial compartment
Forearm extensors Long head of triceps can extend shoulder Synergists in forearm supination
56
Venae comitantes
Veins that parallel arteries- Usually two per artery Countercurrent heat exchange
57
Superior lateral cutaneous nerve of arm is from
From axillary nerve
58
Musculocutaneous nerve continues as
Lateral cutaneous nerve of the forearm, supplying skin on lateral forearm as far as wrist
59
Action of triceps
Forearm extension | Long head also assists in arm extension
60
Radial nerve descends
Posterior to the axillary artery, spirals around posterior surface of humerus in the spiral groove along with the brachial artery
61
Median cubital vein
Connects cephalic and basilic vein Extends diagonally across bicipital aponeurosis Receives blood from median antebrachial vein Drains blood from palmar hand
62
Proximal attachment of medial head triceps
Posterior surface of humerus below radial groove
63
Innervation of anconeus
Radial nerve C7-8, T1
64
Basilic vein
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
Medial intermuscular septum
From subcutaneous sheath to humerus | Separates muscles of anterior arm from medial side of triceps complex
66
Posterior cutaneous nerve of forearm is from
From radial nerve
67
Medial antebrachial cutaneous nerve is from
Direct branch from medial cord
68
Cubital fossa lateral boundary
Brachioradialis muscle
69
Cephalic vein
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
Innervation to triceps
Radial nerve C6-8
71
Muscles of anterior brachial compartment
Biceps brachii Coracobrachialis Brachialis

Anatomy (34 decks)

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