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(J) Anatomy Test 2 > Antebrachial Muscles > Flashcards

Antebrachial Muscles Flashcards

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1
Q

What is the common proximal attachment of the superficial muscles in the anterior compartment of the antebrachium?

A

Medial epicondyle of the humerus

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2
Q

What is the common innervation of the superficial muscles in the anterior compartment of the antebrachium?

A

Median and ulnar nerve

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3
Q

What is the common action of the superficial muscles in the anterior compartment of the antebrachium?

A

Flexion of the wrist and digits

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4
Q

What is the proximal attachment of the flexor digitorum superficialis?

A
  • humero-ulnar head

- radial head

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5
Q

What is the distal attachment of the flexor digitorum superficialis?

A

Shafts of middle phalanges of digits II-V

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6
Q

What innervates the flexor digitorum superficialis?

A

Median nerve

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7
Q

What are the actions of the flexor digitorum superficialis?

A

Independent flexion of the middle phalanges of digits II-V

Flexion of proximal phalanges by continued action

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8
Q

What is the proximal attachment of the flexor digitorum profundus?

A

Proximal two thirds of anterior ulna

Interosseous membrane

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9
Q

What is the distal attachment of the flexor digitorum profundus?

A

Distal phalanges of digits 2-5

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10
Q

What innervates the flexor digitorum profundus?

A

Median nerve via anterior interosseous nerve

Ulnar nerve

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11
Q

What are the actions of the flexor digitorum profundus?

A

Flexion of the DIP joints of digits 2-5

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12
Q

What is the blood supply of the flexor digitorum profundus?

A

Anterior interosseous artery

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13
Q

What is the proximal attachment of the flexor pollicus longus?

A
  • mid-anterior surface of the radius

- interosseous membrane

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14
Q

What is the distal attachment of the flexor pollicus longus?

A

-distal phalanx of thumb

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15
Q

What innervates the flexor pollicus longus?

A

-median nerve

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16
Q

What are the actions of the flexor pollicis longus?

A

-flexion of distal phalanx of thumb

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17
Q

What is the common proximal origin of the superficial muscles in the posterior compartment of the antebrachium?

A

-lateral epicondyle of the humerus

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18
Q

What is the common action of the superficial muscles in the posterior compartment of the antebrachium?

A

-wrist and/or hand extension

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19
Q

What is the common innervation of the superficial muscles in the posterior compartment of the antebrachium?

A

-radial nerve via deep branch of radial nerve or posterior interosseous nerve

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20
Q

What is the proximal attachment of the brachioradialis?

A

-proximal two thirds of the supraepicondylar ridge of humerus

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21
Q

What is the distal attachment of the brachioradialis?

A

-distal radius proximal to styloid process

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22
Q

What innervates the brachioradialis?

A

-radial nerve

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23
Q

What is the blood supply of the brachioradialis?

A

-radial artery and branches

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24
Q

What are the actions of the brachioradialis?

A

-flexion of the forearm when pronated

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25
What is the proximal attachment of the extensor carpi radialis longus?
-lateral supracondylar ridge of the humerus
26
What is the distal attachment of the extensor carpi radialis longus?
-dorsal base of second metacarpal
27
What innervates the extensor carpi radialis longus?
-radial nerve
28
What is the blood supply of extensor carpi radialis longus?
- radial artery and branches | - interosseous artery branches
29
What are the actions of the extensor carpi radialis longus?
-extension and abduction of the hand at the wrist
30
What is the proximal attachment of the extensor carpi radialis brevis?
-lateral epicondyle of humerus
31
What is the distal attachement of the extensor carpi radialis brevis?
-dorsal base of third metacarpal
32
What innervates the extensor carpi radialis brevis?
-deep branch of radial nerve
33
What is the blood supply of the extensor carpi radialis brevis?
- branches of the radial artery | - branches of the interosseous artery
34
What are the actions of the extensor carpi radialis brevis?
-extension and abduction of the hand at the wrist
35
What is the proximal attachment of the extensor digitorum?
-lateral epicondyle of the humerus
36
What is the distal attachment of the extensor digitorum?
-extensor expansions of digits 2-5
37
What innervates the extensor digitorum?
-posterior interosseous nerve
38
What is the blood supply of the extensor digitorum?
-branches of the interosseous artery
39
What are the actions of the extensor digitorum?
- extends digits 2-5 at MCP | - somewhat extends digits 2-5 interphalageal joints
40
What is the proximal attachment of the extensor digiti minimi?
-lateral epicondyle of the humerus
41
What is the distal attachment of the extensor digiti minimi?
-extensor expansion of fifth digit
42
What innervates the extensor digiti minimi?
-posterior interosseous nerve
43
What is the blood supply of the extensor digiti minimi?
-branches of the interosseous artery
44
What are the actions of the extensor digiti minimi?
- extension of the fifth digit at the MCP joint | - somewhat extends the the fifth digit at the interphalangeal joint
45
What is the proximal attachment of the extensor carpi ulnaris?
-lateral epicondyle of the humerus
46
What is the distal attachment of the extensor carpi ulnaris?
-dorsal base of the fifth metacarpal
47
What innervates the extensor carpi ulnaris?
-posterior interosseous nerve
48
What is the blood supply of the extensor carpi ulnaris?
- branches of the radial artery | - branches of the interosseous artery
49
What are the actions of the extensor carpi ulnaris?
-extension and adduction of the hand at the wrist
50
What is the proximal attachment of the pronator teres?
- coronoid process of ulna (ulnar head) | - medial epicondyle and supracondylar ridge of humerus (humeral head)
51
What is the distal attachment of the pronator teres?
-lateral middle third off the radius
52
What innervates the pronator teres?
-median nerve
53
What are the actions of the pronator teres?
- pronates the forearm | - flexes the elbow
54
What is the proximal attachment of the pronator quadratus?
-distal third of ulna
55
What is the distal insertion of the pronator quadratus?
-distal third of the radius
56
What innervates the pronator quadratus?
-anterior interosseous branch of median nerve
57
What are the actions of the pronator quadratus?
- pronation of the forearm | - assists interosseous in holding radius and ulna together
58
What is the proximal attachment of the supinator?
- lateral epicondyle of humerus - radial collateral and annular ligaments - ulnar crest
59
What is the distal attachment of the supinator?
-proximal third of radius
60
What innervates the supinator?
-deep branch of radial nerve
61
What is the proximal attachment of the abductor pollicis longus?
-posterior proximal ulna, radius, and interosseous membrane
62
What is the distal attachment of the abductor pollicis longus?
-base of first metacarpal
63
What innervates the abductor pollicis longus?
-posterior interosseous nerve
64
What is the blood supply of the abductor pollicis longus?
-posterior interosseous artery
65
What are the actions of the abductor pollicis longus?
- abduction of the thumb | - extension of the thumb at carpometacapal joint
66
What is the proximal attachment of the extensor pollicis brevis?
- posterior surface of distal third of radius | - interosseous membrane
67
What is the distal attachment of the extensor pollicis brevis?
-dorsum of the proximal phalanx of thumb
68
What innervates the extensor pollicis brevis?
-posterior interosseous nerve
69
What is the blood supply the extensor pollicis brevis?
-posterior interosseous artery
70
What are the actions of the extensor pollicis brevis?
- extension of proximal phalanx of the thumb at metacarpophalangeal joint - extension of thumb at carpometacarpal joint
71
What is the proximal attachment of the extensor pollicis longus?
- posterior middle third of ulna | - interosseous membrane
72
What is the distal attachment of the extensor pollicis longus?
-dorsal base of distal phalanx of thumb
73
What innervates the extensor pollicis longus?
-posterior interosseous nerve
74
What is the blood supply of the extensor pollicis longus?
- posterior interosseous artery | - perforating branch of anterior interosseous artery
75
What are the actions of the extensor pollicis longus?
- extension of distal phalanx of the thumb at interphalangeal joint - extension of wrist at metacarpophalangeal and carpometacarpal joints

(J) Anatomy Test 2 (13 decks)

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