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MSS Exam 1 > ANATOMY: Forearm > Flashcards

ANATOMY: Forearm Flashcards

1
Q

extensor carpi ulnaris

innervation

A

deep radial n.

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2
Q

brachioradialis:

attachments, function

A

o: lateral supracondyle of the humerus
i: lateral distal radius (does NOT cross wrist joint)

flexes the forearm (only placed in this compartment because of it’s innervation)

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3
Q

extensor pollicis brevis

attachments, function

A

o: posterior radius
i: base of proximal phalanx of thumb

extends thumb at CMC and MCP

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4
Q

what are the tendons that make up the anatomical snuff box?

A

extensor pollicis longus and extensor pollicis brevis

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5
Q

friend nerve to the radial a.

A

superficial radial n.

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6
Q

brachioradialis: innervation

where does this come from?

A

radial n.

terminal branch off the posterior cord

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7
Q

extensor digitorum

innervation, where does this come from?

A

deep radial n.

from radial n. (posterior cord terminal branch)

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8
Q

contents of the anatomical snuff box

A

radial a.
superficial radial n.
scaphoid/trapezium

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9
Q

flexor digitorum superficiales

attachment, function

A

o: medial epicondyle, anterior radius/ulna
i: MIDDLE phalanges of finger

flexes wrist, MCPs and PIPs
DOES NOT FLEX DIPs

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10
Q

the ________ __________ makes the roof of the carpal tunnel

A

flexor retunaculum

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11
Q

extensor carpi radialis brevis

attachments, function

A

o: lateral epicondyle humerus
i: dorsal surface of metacarpal

extends wrist, abducts hand (radial deviation)

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12
Q

flexor carpi ulnaris innervation

where does this come from?

A

ulnar n.

terminal branch of the medial cord of the brachial plexus

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13
Q

flexor carpi ulnaris

attachments, function

A

o: medial epicondyle
i: carpals (medial)

flexes wrist, adducts wrist (ulnar deviation)

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14
Q

pronator teres: innervation

where does this come from?

A

median n.

terminal branch of the medial and lateral cords of brachial plexus

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15
Q

flexor carpi radiales:

innervation? where does this come from?

A

median n.

a terminal branch off the medial and lateral cords

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16
Q

what tendons form the anatomical snuff box?

what are the contents?

A

extensor pollicis brevis, extensor pollicis longus

radial a.
superficial radial n.
scaphoid and trapezium

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17
Q

what is the friend nerve to the brachial artery?

A

median n.

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18
Q

palmaris longus

attachments? function?

A

o: medial epicondyle (anterior compartment)
i: palmar aponeurosis and flexor retinaculum

flexes the wrist and tenses the palmar aponeurosis

19
Q

on radial deviation of the hand, you can palpate what bone (lateral)?

A

trapezium

20
Q

what nerve goes through the carpal tunnel?

A

median n.

21
Q

extensor carpi radialis longus

attachments, function

A

o: lateral supracondyle of humerus
i: DORSAL side of carpals (more lateral carpals)

extends hand, abducts hand (radial deviation)

22
Q

flexor digitorum superficiales

innervation? where does this come from?

A

median n.

comes from the lateral and medial cords

23
Q

flexor digitorum profundas

attachments, function

A

o: anterior ulna
i: DISTAL phalanges fingers

flexes wrist, flexes MCPs, PIPs, and DIPs

24
Q

flexor pollicis longus

attachments, function

A

o: anterior radius
i: distal phalanx thumb

flexes MCP and IP of thumb (brings across palm)

25
Q

palmaris longus

innervation? where does this come from?

A

median n.

terminal branch off the medial and lateral cords

26
Q

flexor carpi radiales:

attachments, function

A

o: medial epicondyle
i: carpals

Flexes wrist, abducts wrist (radial deviation)

27
Q

extensor pollicis longus

attachments, function

A

o: posterior ulna
i: base of distal phalanx of thumb

extends thumb at CMC, MCP, and IP

(ONLY one for IP of thumb)

28
Q

what are the bones that form pillars for the carpal tunnel?

A

trapezium and scaphoid, pisiform and hamate

29
Q

extensor carpi radialis brevis

innervation

A

deep radial n. (FIRST ONE innervated by deep radial n., right after it branches)

30
Q

extensor carpi radialis longus

innervation? where does this come from?

A

radial n.

terminal branch of the posterior cord

31
Q

what happens to the radial n. between the extensor carpi radialis braves and extensor carpi radials longus?

A

the radial n. branches into the superficial radian n. and deep radial n.

everything beyond here will be deep radial n.

32
Q

extensor carpi ulnaris

attachments, function

A

o: lateral epicondyle, posterior ulna
i: base of 5th metacarpal (DORSAL)

extends wrist, adducts hand (ulnar deviation)

33
Q

extensor digitorum

attachments, function

A

o: lateral epicondyle
i: distal AND middle phalanges of fingers (DORSAL SURFACE)

extends MCPs and IPs

34
Q

on ulnar deviation of the hand, you can palpate what bone?

A

scaphoid

35
Q

what tendons go through the carpal tunnel?

A

4 flexor digitorum superficiales tendons
4 flexor digitorum profundas tendons
flexor pollicis longus tendon

36
Q

abductor pollicis longus

innervation, where does this come from?

A

deep radial n.

branch off the radial (a terminal branch of the posterior cord)

37
Q

pronator teres:

attachments, function

A

o: medial epicondyle, proximal ulna
i: lateral mid shaft radius

flexes forearm and pronates hand

38
Q

flexor pollicis longus

innervation where does this come from?

A

median n. (interosseous branch)

39
Q

extensor pollicis brevis

innervation

A

deep radial n.

40
Q

abductor pollicis longus

attachments, function

A

o: posterior radius/ulna
i: base of 1st metatarsal (thumb)

adducts thumb, extends thumb at CMC

41
Q

supinator

attachments, function

A

o: lateral epicondyle, lateral ulna
i: radial shaft (anterior)

supinates forearm

42
Q

flexor digitorum profundas

innervation? where does this come from?

A

median n. (ant. interosseous branch) and ulnar n.

ulnar n. comes from the medial cord of the brachial plexus

43
Q

extensor pollicis longus innervation

A

deep radial n.

MSS Exam 1 (8 decks)

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