Forearm extensors, intrinsic hand muscles Flashcards Preview

Gross Anatomy 1 > Forearm extensors, intrinsic hand muscles > Flashcards

Flashcards in Forearm extensors, intrinsic hand muscles Deck (48)
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1
Q

Nerve: Posterior interosseus n.

Action: Abducts thumb

A

Nerve and Action of the Abductor pollicis longus m.

2
Q

Nerve: Superficial branch of ulnar n.

Action: tightens skin on medial side of palm

A

Nerve and Action of the Palmaris brevis m.

3
Q

Nerve: Radial n.

Action: extend wrist and abducts hand

A

Nerve and Action of the Extensor carpi radialis longus m.

3
Q

Nerve: Posterior interosseous n.

Action: Extends small finger

A

Nerve and Action of the Extensor digiti minimi m.

4
Q

When does the radial n. branch into the superfical and deep branches? Which one enters the supinator m.?

What is the n. called after emerging from the supinator?

A

It divides after it enters the forearm; The deep branch of radial n. enters supinator, and is called the posterior interosseous n. after it emerges.

4
Q

What part of the DORSUM of the hand is supplied by the radial n.?

A

Everything except the medial third of the hand (that belongs to ulnar n.) and the nail beds (which belong to ulnar and median n.)

5
Q

Nerve and Action of the 4 lumbrical m.’s

A

Nerve: Median n. for 2 lateral, Ulnar n. for 2 medial

Action: flex Metacarpophalangial joints, and extend IP joints

6
Q

Nerve and Action of the abductor pollicis brevis m.

A

Nerve: Recurrent branch of median n.

Action: abducts thumb

6
Q

Nerve and Action of the Extensor digiti minimi m.

A

Nerve: Posterior interosseous n.

Action: Extends small finger

6
Q

Nerve: Deep branch of ulnar n.

Action: Flexes proximal phalanx of small finger

A

Nerve and Action of the Flexor digiti minimi m.

8
Q

Nerve and Action of the opponens digiti minimi m.

A

Nerve: Deep branch of ulnar n.

Action: Opposes small finger

9
Q

Nerve and Action of the Extensor carpi radialis longus m.

A

Nerve: Radial n.

Action: extend wrist and abducts hand

11
Q

Nerve and Action of the Opponens pollicis m.

A

Nerve: Recurrent branch of median n.

Action: Opposes thumb to other digits

12
Q

Nerve and Action of the Extensor carpi ulnaris m.

A

Nerve: Posterior interosseous n.

Action: Extends and adducts hand

13
Q

Nerve and Action of the Flexor digiti minimi m.

A

Nerve: Deep branch of ulnar n.

Action: Flexes proximal phalanx of small finger

13
Q

Nerve: deep branch of ulnar n.

Action: Abducts small finger

A

Nerve and Action of the abductor digiti minimi m.

13
Q

Nerve: Median n. for 2 lateral, Ulnar n. for 2 medial

Action: flex Metacarpophalangial joints, and extend IP joints

A

Nerve and Action of the 4 lumbrical m.’s

14
Q

Nerve and Action of the Anconeus m.

A

Nerve: Radial n.

Action: Extend forearm

15
Q

Nerve: Radial n.

Action: Flexes forearm

A

Nerve and Action of the Brachioradialis m.

16
Q

Nerve: Posterior interosseuous n.

Action: Extends proximal phalanx of thumb

A

Nerve and Action of the Extensor pollicis brevis m.

17
Q

Nerve: Posterior interosseuous n.

Action: Extends distal phalanx of thumb

A

Nerve and Action of the Extensor pollicis longus m.

18
Q

Nerve and Action of the supinator m.

A

Nerve: Deep branch of radial n.

action: Supinates forearm

19
Q

Nerve and Action of the Abductor pollicis longus m.

A

Nerve: Posterior interosseus n.

Action: Abducts thumb

20
Q

Nerve: Radial n.

Action: Extend forearm

A

Nerve and Action of the Anconeus m.

22
Q

Nerve and Action of the Extensor pollicis brevis m.

A

Nerve: Posterior interosseuous n.

Action: Extends proximal phalanx of thumb

23
Q

Nerve: Posterior interosseous n.

Action: Extends and adducts hand

A

Nerve and Action of the Extensor carpi ulnaris m.

25
Q

Nerve and Action of the Extensor digitorum m.

A

Nerve: Posterior interosseus n.

Action: Extends fingers and hand

25
Q

Nerve: Deep branch of radial n.

Action: Extends wrist and abducts hand.

A

Nerve and Action of the Extensor carpi radialis brevis m.

26
Q

Nerve: Posterior interosseous n.

Action: Extends index finger

A

Nerve and Action of the Extensor indicis m.

27
Q

Nerve: Deep branch of ulnar n.

Action: Adducts fingers

Mneumonic: PAD

A

Nerve and Action of the 3 Palmar interosseus m.’s

29
Q

Nerve and Action of the Extensor carpi radialis brevis m.

A

Nerve: Deep branch of radial n.

Action: Extends wrist and abducts hand.

30
Q

Nerve: Deep branch of ulnar n.

Action: Adducts thumb

A

Nerve and Action of the Adductor pollicis m.

31
Q

Nerve and Action of the Adductor pollicis m.

A

Nerve: Deep branch of ulnar n.

Action: Adducts thumb

32
Q

Nerve and Action of the 3 Palmar interosseus m.’s

A

Nerve: Deep branch of ulnar n.

Action: Adducts fingers

Mneumonic: PAD

33
Q

Nerve and Action of the Extensor pollicis longus m.

A

Nerve: Posterior interosseuous n.

Action: Extends distal phalanx of thumb

34
Q

Nerve and Action of the abductor digiti minimi m.

A

Nerve: deep branch of ulnar n.

Action: Abducts small finger

35
Q

Nerve: Recurrent branch of median n.

Action: Opposes thumb to other digits

A

Nerve and Action of the Opponens pollicis m.

36
Q

Nerve and Action of the Extensor indicis m.

A

Nerve: Posterior interosseous n.

Action: Extends index finger

37
Q

Nerve: Recurrent branch of the medain n.

Action: Flexes thumb

A

Nerve and Action of the Flexor Pollicis Brevis m.

39
Q

Nerve and Action of the Brachioradialis m.

A

Nerve: Radial n.

Action: Flexes forearm

40
Q

Nerve: Recurrent branch of median n.

Action: abducts thumb

A

Nerve and Action of the abductor pollicis brevis m.

41
Q

Nerve and Action of the Flexor Pollicis Brevis m.

A

Nerve: Recurrent branch of the medain n.

Action: Flexes thumb

42
Q

Nerve: Deep branch of radial n.

action: Supinates forearm

A

Nerve and Action of the supinator m.

44
Q

Nerve: Deep branch of ulnar n.

Action: Abducts fingers

Mneumonic: DAB

A

Nerve and Action of the 4 Dorsal interosseus m.’s

45
Q

Nerve and Action of the 4 Dorsal interosseus m.’s

A

Nerve: Deep branch of ulnar n.

Action: Abducts fingers

Mneumonic: DAB

46
Q

Nerve and Action of the Palmaris brevis m.

A

Nerve: Superficial branch of ulnar n.

Action: tightens skin on medial side of palm

47
Q

Nerve: Deep branch of ulnar n.

Action: Opposes small finger

A

Nerve and Action of the opponens digiti minimi m.

48
Q

Nerve: Posterior interosseus n.

Action: Extends fingers and hand

A

Nerve and Action of the Extensor digitorum m.