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Anatomy II > Forearm, hand, and wrist > Flashcards

Forearm, hand, and wrist Flashcards

1
Q

Which nerve is being compressed in carpal tunnel syndrome?

A

median nerve

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2
Q

Where will pain, numbness, and tingling occur in carpal tunnel syndrome?

A

thumb
index finger
middle finger
thumb side of the ring finger

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3
Q

What muscles are affected in carpal tunnel syndrome?

A

thenar eminence muscles

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4
Q

What muscles can be weakened from carpal tunnel syndrome?

A

ABOF the law muscles
Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

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5
Q

What nerve is the flexor-supinator nerve of the forearm?

A

musculocutaneous nerve

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6
Q

What muscles does the musculocutaneous nerve innervate?

A

anterior compartment of the arm
biceps brachii
brachialis
coracobrachialis

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7
Q

What is the action of the biceps brachii?

A

flexor and supinator of the forearm

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8
Q

What is the action of the brachialis?

A

the strong flexor of the forearm

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9
Q

What is the action of the coracobrachialis?

A

weak adductor

the LANDMARK muscle

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10
Q

What nerve is the extensor and the assistant supinator of the upper extremity?

A

radial nerve

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11
Q

What nerve innervates the muscles in the posterior compartment of the arm and forearm?

A

the radial nerve

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12
Q

What muscles does the radial nerve innervate?

A

triceps brachii
extensor (posterior) compartment- digiti, carpi, pollicis, indicis
assistant supinator

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13
Q

What is the action of the triceps brachii?

A

extensor of the elbow joint

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14
Q

What nerve is the “saturday night paralysis” nerve?

A

radial nerve

affected in humeral fractures

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15
Q

Which nerve is the flexor, pronator, thumb to finger approximator?

A

median nerve

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16
Q

What muscles does the median nerve innervate?

A

all the muscles in the anterior compartment of the forearm (except flexor carpi ulnaris and medial half of flexor digitorum profundus). three thenar muscles of thumb and two lateral lumbricals
innervates forearm flexors except flexor carpi ulnaris and flexor digitorum profundus of the 4th and 5th fingers

17
Q

Which nerve passes through the carpal tunnel?

A

median nerve

18
Q

Which nerve is the finger-spreader approximator and assistant forearm flexor nerve?

A

ulnar nerve

19
Q

Which nerve innervates the “funny bone” ?

A

the ulnar nerve

20
Q

What muscles does the ulnar nerve innervate?

A 
flexor carpi ulnaris 
flexor digitorum profundus to the 4th and 5th fingers 
flexor digiti minimi 
abductor digiti minimi 
adductor pollicis
21
Q

What is froment’s sign?

A

cannot hold the paper between the thumb and palm or thumb and index finger and use flexor pollicis muscles to hold paper

22
Q

What are the digital flexors?

A

superficial digital flexors

profunda digital flexors

23
Q

What are the anterior flexor groups?

A

digital
thumb
wrist (carpal)

24
Q

What muscle is the anterior flexor of the thumb?

A

flexor pollicis longus

25
Q

What is the anterior flexor of the wrist?

A

flexor carpi radialis

26
Q

What does the abductor pollicis longus do?

A

Abduct the thumb

27
Q

What are the posterior extensor groups?

A

digital
thumb (pollicis)
wrist (carpi)

28
Q

What are the posterior digital extensors?

A

extensor digitorum
extensor digiti minimi
extensor indicis

29
Q

What are the poster thumb extensors?

A

extensor pollicis longus

extensor pollicis brevis

30
Q

What are the posterior carpi extensors?

A

extensor carpi radialis longus

extensor carpi radialis brevis

31
Q

What is a Colle’s fracture?

A

fall on outstretched arm with wrist dorsiflexed
fracture through distal radial metaphysis
dorsal angulation and displacement of distal fragment

32
Q

What additional fracture is sometimes seen with a Colle’s fracture?

A

ulnar styloid fracture

Anatomy II (4 decks)

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