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Anatomy > Muscles of the Forearm - attachments, innervations, actions > Flashcards

Muscles of the Forearm - attachments, innervations, actions Flashcards

1
Q

abductor pollicis longus inn and s.c. segment

A

-inn: radial nerve
-s.c. segment: C6-8

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2
Q

abductor pollicis longus attachments

A

from proximal posterior radius, ulna, and interosseous membrane to the base of the 1st metacarpal and trapezium

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3
Q

abductor pollicis longus actions

A

-abducts and extends thumb at carpometacarpal joint
-abducts hand at wrist (radial deviation)

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4
Q

brachioradialis inn. and s.c. segment

A

-inn: radial nerve
-s.c. segment: C5-6

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5
Q

brachioradialis attachments

A

from the lateral supracondylar ridge of the humerus to the distal radius lateral to the styloid process

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6
Q

brachioradialis actions

A

flexes elbow

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7
Q

extensor carpi radialis brevis inn. and s.c. segment

A

-inn: radial nerve
-s.c. segment: C6-8

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8
Q

extensor carpi radialis brevis attachments

A

from lateral epicondyle of humerus (common extensor origin) to base of the 3rd metacarpal

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9
Q

extensor carpi radialis brevis actions

A

extends and abducts hand at wrist (radial deviation)

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10
Q

extensor carpi radialis longus inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: C6-8

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11
Q

extensor carpi radialis longus attachments

A

from lateral supracondylar ridge of humerus to base of the 2nd metacarpal

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12
Q

extensor carpi radialis longus actions

A

-extends and abducts hand and wrist (radial deviation)
-assists in flexion at the elbow

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13
Q

extensor carpi ulnaris inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: C6-8

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14
Q

extensor carpi ulnaris attachments

A

from lateral epicondyle of humerus (common extensor origin) to base of the 5th metacarpal

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15
Q

extensor carpi ulnaris actions

A

extends and adducts hand at wrist (ulnar deviation)

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16
Q

extensor digitorum inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: radial nerve

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17
Q

extensor digitorum attachments

A

from lateral epicondyle of the humerus (common extensor origin) to extensor expansions of digits 2-5

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18
Q

extensor digitorum actions

A

extends phalanges (primarily at metacarpophalangeal, secondarily at interphalangeal) and hand and wrist

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19
Q

extensor digiti minimi inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: C7-8

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20
Q

extensor digiti minimi attachments

A

from lateral epicondyle of humerus (common extensor origin) to digital expansion of 5th digit

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21
Q

extensor digiti minimi actions

A

extends 5th digit (metacarpophalangeal and interphalangeal)

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22
Q

extensor indicis inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: C7-8

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23
Q

extensor indicis attachments

A

from the posterior surface of the ulna and interosseous membrane to the digital expansion of the 2nd digit

24
Q

extensor indicis actions

A

extends 2nd digit (metacarpophalangeal and interphalangeal)

25
Q

extensor pollicis brevis inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: C6-8

26
Q

extensor pollicis brevis attachments

A

from the posterior radial surface and interosseous membrane to the base of the 1st proximal phalanx

27
Q

extensor pollicis brevis actions

A

extends thumb (metacarpophalangeal) and extends and abducts CMC joint

28
Q

extensor pollicis longus inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: C6-8

29
Q

extensor pollicis longus attachments

A

from the middle 1/3rd of the posterior surface of the ulna and interosseous membrane to the base of the 1st distal phalanx

30
Q

extensor pollicis longus actions

A

extends thumb (CMC and metacarpophalangeal and interphalangeal)

31
Q

flexor carpi radialis inn. and s.c. segment

A

-inn.: median nerve
-s.c. segment: C6-8

32
Q

flexor carpi radialis attachments

A

from medial epicondyle (common flexor origin) to the palmar aspect of the base of the 2nd metacarpal

33
Q

flexor carpi radialis actions

A

-flexes and abducts hand at wrist (radial deviation)
-may assist in pronation of forearm and flexion of elbow

34
Q

flexor carpi ulnaris inn. and s.c. segment

A

-inn.: ulnar nerve
-s.c. segment: C7-T1

35
Q

flexor carpi ulnaris attachments

A

from medial epicondyle (common flexor origin) of the humerus and proximal ulnar shaft to the pisiform

36
Q

flexor carpi ulnaris actions

A

flexes and adducts hand at wrist (ulnar deviation) and assists in flexor of elbow

37
Q

flexor digitorum profundus inn. and s.c. segment

A

-inn.: median (anterior interosseous nerve; 2nd and 3rd digits) and ulnar (4th and 5th digits)
-s.c. segment: C7-T1

38
Q

flexor digitorum profundus attachments

A

from anterior proximal two thirds of ulna and interosseous membrane to the base of the distal phalanges of digits 2-5

39
Q

flexor digitorum profundus actions

A

-flexion of digits 2-5 (metacarpophalangeal and distal interphalangeal and proximal interphalangeal)
-flexion of hand at wrist

40
Q

flexor digitorum superficialis (C7-T1) inn. and s.c. segment

A

-inn.: median nerve
-s.c. segment: C7-T1

41
Q

flexor digitorum superficialis attachments

A

from medial epicondyle (common flexor origin) of humerus to sides of the middle phalanges of digits 2-5

42
Q

flexor digitorum superficialis actions

A

flexion of digits (metacarpophalangeal and proximal interphalangeal) and hand at wrist

43
Q

flexor pollicis longus inn. and s.c. segment

A

-inn.: median nerve (anterior interosseous nerve)
-s.c. segment: C7-T1

44
Q

flexor pollicis longus attachments

A

from anterior surface of the radius and interosseous membrane to the base of the distal phalanx of the thumb

45
Q

flexor pollicis longus actions

A

flexes thumb (metacarpophalangeal and interphalaneal)

46
Q

palmaris longus inn. and s.c. segment

A

-inn.: median nerve
-s.c. segment: C7-8

47
Q

palmaris longus attachments

A

from medial epicondyle of humerus (common flexor origin) to the palmar aponeurosis

48
Q

palmaris longus actions

A

flexes hand at wrist and tenses palmar fascia

49
Q

pronator quadratus inn. and s.c. segment

A

-inn.: median nerve (anterior interosseous nerve)
-s.c. segment: C8-T1

50
Q

pronator quadratus attachments

A

from the anterior surface of the distal ulna to the anterior surface of distal radius

51
Q

pronator quadratus actions

A

pronates the forearm

52
Q

pronator teres inn. and s.c. segment

A

-inn.: median nerve
-s.c. segment: C6-7

53
Q

pronator teres attachments

A

from medial epicondyle and ulnar conoid process to lateral aspect of radius

54
Q

pronator teres actions

A

pronates and flexes forearm

55
Q

supinator inn. and s.c. segment

A

-inn.: radial nerve
-s.c. segment: C5-6

56
Q

supinator attachments

A

from lateral epicondyle of humerus, radial collateral ligament and supinator crest of ulna to the lateral surface of the proximal radius

57
Q

supinator actions

A

supinates forearm

Anatomy (5 decks)

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