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Anatomy > 9: Cubital fossa and musculo-neuro-vascular systems of the posterior forearm > Flashcards

9: Cubital fossa and musculo-neuro-vascular systems of the posterior forearm Flashcards

(76 cards)

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1
Q

Muscles responsible for elbow flexion

A

Brachialis
Biceps brachii
Brachioradialis
Pronater Teres

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2
Q

Muscles responsible for wrist flexion

A

Flexor carpi ulnaris
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Flexor digitorum profundus

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3
Q

Muscles responsible for radial deviation

A

Flexor carpi radialis

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4
Q

Muscles responsible for ulnar deviation

A

Flexor carpi ulnaris

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5
Q

Superior boundary of cubital fossa

A

Line between medial and lateral epicondyles

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6
Q

Medial boundary of cubital fossa

A

Pronator teres

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7
Q

Lateral boundary of cubital fossa

A

Brachioradialis

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8
Q

Roof of cubital fossa

A

Fascia of forearm and bicipital aponeurosis

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9
Q

Floor of cubical fossa

A

Biceps tendon
Brachialis
Supinator

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10
Q

Contents of cubital fossa (from lateral to medial)

A

Really need booze to be at my nicest
Radial nerve
Biceps tendon
Brachial artery
Median nerve

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11
Q

Muscles in posterior compartment of forearm

A

Superficial
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
Extensor digitorum
Extensor digit minimi

Deep
Supinator
Abductor Pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor Indicis

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12
Q

Posterior forearm muscles supplied by the… except (2)

A

Posterior Interosseus branch of the radial nerve
Brachioradialis (supplied by radial nerve directly)
Extensor carpi radialis longus (supplied by radial nerve directly)

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13
Q

Superficial muscles of posterior compartment are attached to… Through the..

A

The lateral epicondyle
Common extensor tendon

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14
Q

Origin of brachioradialis

A

Proximal 2/3 of lateral supracondular ridge

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15
Q

Insertion of brachioradialis

A

Lateral surface of distal end of radius and styloid process

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16
Q

Innervation of brachioradialis

A

Radial nerve directly

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17
Q

Actions of brachioradialis

A

When forearm is pronated, BR supinates forearm and flexes elbow
When forearm is supinated, BR pronates forearm

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18
Q

Origin of extensor carpi radialis longus

A

Lateral supracondylar ridge

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19
Q

Insertion of extensor carpi radialis longus

A

Dorsal aspect of base of second metacarpal

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20
Q

Innervation of extensor carpi radialis longus

A

Radial nerve directly

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21
Q

Actions of extensor carpi radialis longus

A

Extends and abducts wrist at radiocarbon joint

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22
Q

Origin of extensor carpi radialis brevis

A

Lateral epicondyle

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23
Q

Insertion of extensor carpi radialis brevis

A

Dorsal aspect of base of 3rd metacarpal

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24
Q

Innervation of extensor carpi radialis brevis

A

Posterior interosseous branch of radial nerve

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25
Actions of extensor carpi radialis brevis
Extends + abducts wrist at radiocarpal joint
26
Origin of extensor carpi ulnaris
Lateral epicondyle
27
Insertion of extensor carpi ulnaris
Dorsal aspect of base of 5th metacarpal
28
Innervation of extensor carpi ulnaris
Posterior interosseus branch of radial nerve
29
Actions of extensor carpi ulnaris
Extends +adducts wrist at radiocarpal joint
30
Origin of extensor digitorum
common extensor origin
31
Insertion of extensor digitorum
Dorsal aspect of base of middle and distal Phalanges 2-5
32
Innervation of extensor digitorum
Posterior interosseus branch of radial nerve
33
Actions of extensor digitorum
Extends digits 2-5 at proximal and distal IP joints
34
Insertions of extensor digitorum
1. Median band (median slip inserts into the dorsal aspect of the middle phalanx) 2. Outer bands (the 2 outer slips reunite on the dorsal aspect of the distal phalanx)
35
The proximal extensor expansion insert….
Into the underlying MCP joint capsule
36
Origin of extensor digiti minimi
Common extensor origin
37
Insertion of extensor digiti minimi
Dorsal aspect of digit 5, base of middle and distal phalanx
38
Innervation of extensor digiti minimi
Posterior interosseous branch of radial nerve
39
Actions of extensor digiti minimi
Extends little finger at distal and proximal interphalangeal joints
40
Origin of supinator
Deep head: supinator crest of ulna Superficial head: common extensor tendon
41
Insertion of supinator
Anterolateral surface of proximal 1/3 of radius
42
Innervation of supinator
Posterior interosseous branch of radial nerve
43
Actions of supinator
Supinates forearm
44
Origin of abductor Pollicis longus
Posterior ulna, interosseous membrane
45
Insertion of abductor pollicis longus
Lateral aspect of base of 1st metacarpal
46
Innervation of abductor Pollicis longus
Posterior interosseous branch of radial nerve
47
Actions of abductor pollicis longus
Extends and abducts thumb at CMC joint
48
Origin of extensor pollicis longs
Posterior surface of middle third ulna and interosseous membrane
49
Insertion of extensor Pollicis longus
Dorsal aspect of base of thumb + distal phalanx
50
Innervation of extensor pollicis longus
Posterior interosseous branch of radial nerve
51
Actions of extensor pollicis longus
Extends proximal and distal phalanges of thumb Extends first MC joint
52
Origin of extensor pollicis brevis
Posterior surface of distal radius and interosseus membrane
53
Insertion of extensor pollicis brevis
Dorsal aspect of base of proximal phalanx of thumb
54
Innervation of extensor pollicis brevis
Posterior interosseous branch of radial nerve
55
Actions of extensor pollicis brevis
Extends proximal phalanx of thumb Extends first MC joint
56
Origin of extensor indicis
Posterior surface of ulna and interosseous membrane
57
Insertion of extensor indicis
Dorsal aspect of index finger
58
Innervation of extensor indicis
Posterior interosseous branch of radial nerve
59
Actions of extensor indicis
Extends index finger
60
As brachial artery enters forearm deep to…. it bifurcates……
bicipital aponeurosis Radial + ulnar artery
61
Superior and inferior ulnar collateral arteries anastomose with....
Ulnar recurrent arteries
62
Radial collateral artery anastomoses with...
Radial recurrent arteries
63
Common interosseous artery divides into
Anterior branch Posterior branch
64
Posterior interosseus artery anastomoses with...
The middle collateral branch of the profunda brachii Together these supply the middle posterior part of the elbow
65
Both anterior and posterior branches of the interosseous arteries supply....
The proximal radioulnar joint
66
Radial artery arises in...
Cubical fossa from bifurcation of brachial artery
67
Course of ulnar artery
Courses distally from its origin in the cubital fossa along the medial side of the forearm Runs between flexor carpi ulnaris and flexor digitorum profundus
68
Ulnar artery and its branches supply
Medial part of the forearm
69
Deep veins
Radial Ulnar Posterior interosseous Anterior interosseous
70
Superficial veins
Cephalic Basilic Median antebrachial
71
Forearm nerves (3)
Median nerve + anterior interosseous branch Ulnar nerve Radial nerve + posterior interosseous branch
72
Course of median nerve
Passes over ulnar artery and continues distally between flexor digitorum superficialis and profundus Innervates most of the muscles in anterior compartment Passes distally between flexor digitorum superficialis and profundus and exits forearm through carpal tunnel at wrist
73
Course of anterior interosseous nerve
Runs distally along the anterior part of interosseous membrane and innervates the anterior compartment muscles
74
Course of ulnar nerve
Descends posterior to medial epicondyle, enters forearm between 2 heads of flexor carpi ulnaris, descends distally between flexor digitorum profundus and flexor carpi ulnaris and medial to ulnar artery. Ulnar nerve enters the hand superficial to flexor retinaculum and lateral to carpi ulnaris tendon
75
Branches of radial nerve
Superficial and deep
76
Posterior interosseous nerve course
Passes between two heads of supinator and courses distally in the posterior forearm compartment Supplies most muscles of extensor compartment

Anatomy (17 decks)

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