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more anatomy > forearm cont. > Flashcards

forearm cont. Flashcards

1
Q

what is the purpose of the elbow joint

A

hinge joint for flexion and extension of forearm

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2
Q

what is the purpose of the radioulnar joint

A

pivot joint for pronation and supination of forearm

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3
Q

what is pronation

A

palms facing up

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4
Q

what is supination

A

palms facing down

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5
Q

what are the 3 functions of the interosseous membrane

A

holds radius ad ulna together
site of attachment
transfers forces

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6
Q

what type of muscles are the anterior muscles

A

flexor muscles

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7
Q

how are the anterior muscles innervated

A

median nerve

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8
Q

how are the anterior muscles supplied with blood

A

radial and ulnar artery

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9
Q

pronator teres

A

O= medial epicindyle of humerus
I= midshaft of radius

superficial

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10
Q

flexor carpi radialis

A

superficial

O= medial epincindyle of humerus
I= base of metacarpals 2-3

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11
Q

palmaris longus

A

superficial

O= medial epincindyle of humerus I=flexor retaculum and palmer apopneurosis of hand

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12
Q

flexor carpi ulnaris

A

superficial

O= medial epincindyle of humerus
I= pisifom, hook of harnate, base of finger 5

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13
Q

flexor digitorum superficialis

A

intermediate

O= medial epincindyle of humerus
I= middle phalanges of digits 2-5

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14
Q

flexor pollicus longus

A

deep

O= anterior surface of radius and interosserous membrane
I= thumb

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15
Q

flexor digitorum profundus

A

deep
O= anterior surface of ulna and interserrous membrane
I= distal phalanges 2-5

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16
Q

pronator quadratus

A

deep
O= distal anterior of ulna
I= distal anterior surface of radius

17
Q

what kind of muscles are the posterior muscles

A

extensor muscles
extend wrist and fingers

18
Q

how are the posterior muscles innervated

A

radial nerve

19
Q

how are the posterior muscles supplied with blood

A

ulnar artery

20
Q

which side of the forearm is the ulna on

A

little finger side

21
Q

which side of the forearm is the radius on

A

thumb side

22
Q

brachioradialis

A

superficial

O=lateral ridge of humerus
I= distal end of radius

23
Q

Extensor carpi radialias longus

A

superficial

O= lateral ridge of humerus
I = Base of metacarpal 2

24
Q

extensor carpi radialis brevis

A

superficial

O= lateral epicondyle of humerus
I= base of metacarpal 3

25
Q

extensor digitorum

A

superficial

O= lateral epicondyle of humerus
I= extensor expansion of 2-5

26
Q

extensor digiti minimi

A

superficial

O= lateral epicondyle of humerus
I= extensor expansion of 5

27
Q

extensor carpi ulnaris

A

superficial

O= lateral epicondyle of humerus
I= base of 5

28
Q

anconeus

A

superficial

O= lateral epicondyle of humerus
I= olecranon and posterior surface of ulna

29
Q

supinator

A

deep

O= lateral epicondyle of humerus
I= radius

30
Q

abductor pollicis longus

A

deep

O= posterior surface of ulna, radius and interserrous membrane
I= base of metacarpal 1

31
Q

extensor pollicis brevis

A

deep

O= posterior surface of radius and interserrous membrane
I= base of proximal phalanx and thumb

32
Q

extensor pollicis longus

A

deep

O= posterior surface of ulna and interoserrous membrane
I= base of distal phalanx of thumb

33
Q

extensor indicis

A

deep

O= posterior surface of ulna and interoserrous membrane
I= extensor expansion of index finger

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