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Human Cadaver Anatomy > Muscles of the Upper Limb 2 > Flashcards

Muscles of the Upper Limb 2 Flashcards

1
Q

what are the anterior forearm muscles?

A

pronators (teres snd quadratus)
flexor carpi (radialis and ulnaris)
palmaris longus
flexor digitorum (superficialis and profundus)
flexor pollicis longus

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2
Q

what is the function of the pronator teres?

A

pronates forearm

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3
Q

what is the function of the flexor carpi radialis?

A

flexes and abducts hand

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4
Q

what is the function of the palmaris longus?

A

tenses fascia of palm

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5
Q

what is the function of the flexor carpi ulnaris?

A

flexes and adducts hand

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6
Q

what is the function of the flexor digitorum superficialis?

A

flexes hand and 2nd-5th digits

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7
Q

what is the function of the flexor digitorum profundus?

A

flexes 2nd-5th digits

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8
Q

what is the function of the flexor pollicis longus?

A

flexes thumb

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9
Q

what is the function of the pronator quadratus?

A

pronates forearm

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10
Q

what is the cubital fossa?

A

triangular shaped region on the anterior elbow surface

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11
Q

what forms the medial boundary of the cubital fossa?

A

pronator teres

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12
Q

what forms the lateral boundary of the cubital fossa?

A

brachioradialis

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13
Q

what forms the superior boundary of the cubital fossa?

A

line through medial and lateral epicondyles

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14
Q

what forms the floor of the cubital fossa?

A

supinator and brachialis

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15
Q

what forms the roof of the cubital fossa?

A

fascia, adipose, skin

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16
Q

what does the cubital fossa contain?

A

radial nerve
biceps brachii tendon
brachial artery and radial and ulnar branches
median nerve

17
Q

What is the medical relevance of the cubital fossa?

A

common area for drawing blood, median cubital vein

18
Q

what are flexor retinaculum

A

thickenings of the antebrachial fascia that bind down the flexor tendons, forms the roof of the carpal tunnel

19
Q

what is the function of the palmar aponeurosis?

A

continuous with flexor retinaculum and receives tendon of the palmaris longus (invests muscles of palm)

20
Q

what is the carpal tunnel?

A

an osseofascial space posterolaterally by carpals and anteriorly by flexor retinaculum

21
Q

what does the carpal tunnel contain?

A

median nerve
tendons of flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus

22
Q

what is the common flexor sheath?

A

synovial sheath in the carpal tunnel and contains tendons of the flexor digitorum profundus and flexor digitorum superficialis

23
Q

what is the function of the common flexor sheath?

A

reduces friction as tendons pass through the tunnel

24
Q

what are the posterior forearm muscles?

A

brachioradialis
extensor carpi radialis (longus and brevis)
extensor digitorum
extensor carpi ulnaris
supinator
abductor pollicis longus
extensor pollicis (longus and brevis)
extensor indicis

25
Q

what is the function of the brachioradialis

A

flexes forearm

26
Q

what is the function of the extensor carpi radialis

A

extends and abducts hand

27
Q

what is the function of the extensor digitorum

A

extends 2nd-5th digits

28
Q

what is the function of the extensor carpi ulnaris?

A

extends and adducts hand

29
Q

what is the function of the supinator

A

supinates forearm

30
Q

what is the function of the abductor pollicis longus

A

abducts and extends thumb

31
Q

what is the function of the extensor pollicis longus and brevis

A

extends the thumb

32
Q

what is the function of the extensor indicis?

A

extends 2nd digit

33
Q

what is the anatomical snuff box formed by?

A

medially by tendons of the extensor pollicis longus
laterally by tendons of extensor pollicis brevis and adductor pollicis longus

34
Q

what does the anatomical snuff box contain?

A

radial artery

35
Q

what are extensor retinaculum?

A

thickenings of antebrachial fascia that bind down extensor tendons

36
Q

what envelops the extensor tendons? why?

A

synovial sheaths, reduce friction as tendons pass under extensor retinaculum

37
Q
A

Human Cadaver Anatomy (39 decks)

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