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med209 > the back of the forearm > Flashcards

the back of the forearm Flashcards

1
Q

what is the origin and insertion of the brachioradialis

A

origin:upper part of lateral supra-condylar ridge of
humerus.
insertion: base of styloid process of radius

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2
Q

what action does the brachioradialis perform

A

Accessory flexor of elbow joint when forearm is mid-pronated.

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3
Q

what nerve supplies the brachioradialis

A

the radial nerve

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4
Q

what is the origin and insertion of the extensor carpi radialis longus

A

origin:Lower part of lateral supra- condylar ridge of humerus.
insertion:Dorsal surface of base of
metacarpal 2.

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5
Q

what action does extensor carpi radialis longus perform

A

extends and abducts the wrist

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6
Q

what nerve supplies the extensor carpi radialis

A

the radial nerve

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7
Q

what is the origin and insertion of the extensor carpi radialis brevis

A

origin: lateral epicondyle of humerus
insertion: Dorsal surface of base of metacarpal 3

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8
Q

what is the action of Extensor carpi radialis brevis

A

Extends and abducts the wrist.

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9
Q

what is the nerve supply to Extensor carpi radialis brevis

A

Deep branch of radial nerve.

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10
Q

what is the origin and insertion of extensor digitorum?

A

origin: Lateral epicondyle o f humerus.
insertion: Four tendons, into thedorsal aspects of the bases of the middle and distal phalanges

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11
Q

what is the action of the extensor digitorum

A

Extends the inter - phalangeal joints of the (medial 4 fingers), metacapo - phalangeal joints and also extends the wrist

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12
Q

what is the nerve supply of the extensor digitorum

A

Posterior interosseous branch of radial.

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13
Q

what is the origin and insertion of the extensor digit minimi

A

origin:Lateral epicondyle of humerus.
Insertion: Extensor expansion of the little finger

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14
Q

what is the action of extensor digiti minimi

A

extends the little finger

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15
Q

what is the nerve supply of extensor digiti minimi

A

Posterior interosseous nerve

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16
Q

what is the origin and insertion of extensor carpi ulnaris

A

Origin: Lateral epicondyle of humerus and posterior border of ulna
Insertion: The base of the metacarpal 5

17
Q

what is the action of extensor carpi ulnaris

A

Extends and adducts the wrist.

18
Q

what is the nerve supply of extensor carpi ulnaris

A

Posterior interosseous nerve.

19
Q

what is the origin and insertion of anconeous

A

Origin: Posterior surface of lateral epicondyle of humerus.
Insertion: Olecranon and upper posterior surface of
ulna.

20
Q

what is the action of anconeous

A

extensor of the elbow joint

21
Q

what is the nerve supply of anconeous

A

radial nerve

22
Q

what is the origin and insertion of supinator

A

Origin: Lateral epicondyle of humerus &crest of the ulna.
Insertion: Lateral surface of radius above to the oblique line.

23
Q

what is the action of supinator

A

supination

24
Q

what is the nerve supply of supinator

A

deep branch of radial nerve

25
Q

what is the origin and insertion of Abductor pollicis longus

A

Origin: Posterior surfaces of ulna and radius (below to the attachments of anconeus and supinator), and intervening interosseous membrane.
Insertion: Lateral side of base of metacarpal 1.

26
Q

what is the action of Abductor pollicis longus

A

Abducts carpometacarpal joint of thumb.

27
Q

what is the nerve supply of Abductor pollicis longus

A

Posterior interosseous nerve.

28
Q

what is the origin and insertion of Extensor pollicis brevis

A

Origin: Posterior surface of radius (below to abductor pollicis
longus) and the adjacent interosseous membrane.
Insertion: Dorsal surface of base of pr
the thumb.

29
Q

what is the action of Extensor pollicis brevis

A

extends the metacarpo phalangeal joint of the thumb and also extends the carpo metacarpal joint of the thumb

30
Q

what is the nerve supply of Extensor pollicis brevis

A

Posterior interosseous nerve.

31
Q

what is the origin and insertion of Extensor policis longus

A

Origin: Posterior surface of ulna (below the abductor pollicislongus) and the adjacent interosseous membrane.
Insertion: Dorsal surface of base of distal phalanx of thumb.

32
Q

what is the action of Extensor policis longus

A

Extends inter-phalangeal joint of the thumb

33
Q

what is the nerve supply of extensor policis longus

A

Posterior interosseous nerve.

34
Q

what is the origin and insertion point of extensor indicus

A

Origin: Posterior surface of ulna (below to extensor pollicis longus) and adjacent interosseous membrane.
Insertion: Extensor expansion of index finger.

35
Q

what is the action of extensor indicus

A

Extends index finger.

36
Q

what is the nerve supply of extensor indicus

A

Posterior interosseous nerve.

37
Q

what is the function of extensor retinaculum

A

It holds the long extensor tendons in position.

38
Q

what is the origin and insertion of extensor retinculum

A

Medially to the triquetrum & pisiform bones and laterally to the lower part of the anterior
border of radius.

med209 (19 decks)

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