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Anatomy Y1 S2 > Posterior forearm and hand > Flashcards

Posterior forearm and hand Flashcards

1
Q

What are the origins and insertions of brachioradialis

A

Origin: Superior 2/3 of lateral supracondylar ridge of humerus

Insertion: Lateral aspect of distal humerus

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2
Q

What is the action of brachioradialis

A

Flexes forearm at elbow

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3
Q

WHat innervates brachiioradialis

A

Radial nerve (C5-C6)

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4
Q

WHat supplies brachioradialis with blood?

A

Radial recurrent and collateral arteries, radial artery

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5
Q

WHat are the origins and insertions of extensor carpi radialis longus?

A

Origin: Inferior 1/3 of lat. supracondylar ridge of humerus

Insertion: Dorsal base of second metacarpal bone

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6
Q

WHat is the action of extensor carpi radialis longus?

A

Extends hand at wrist, abducts hand at radiocarpal and midcarpal joints

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7
Q

What innervates the extensor carpi radialis longus?

A

Radial nerve (C6-7)

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8
Q

WHat supplies the extensor carpi radialis longus with blood

A

Radial recurrent and collateral arteries, radial artery

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9
Q

What is the origins/innervation of extensor carpi radialis brevis muscle

A

Origin: Lateral epicondyle of humerus, via common extensor tendon

Insertion: Dorsal base of 3rd metacarpal

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10
Q

What is the action of extensor carpi radialis brevis

A

Extends hand at radiocarpal joint, abducts hand at radiocarpal and midcarpal joints

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11
Q

What innervates the extensor carpi radialis brevis?

A

Deep branch of radial nerve (C7-8), posterior antebrachial interosseous nerve (C7-8)

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12
Q

What supplies the extensor carpi radialis brevis with blood?

A

Radial recurrent artery, radial artery

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13
Q

What are the insertions/origins of the extensor digitorum muscle?

A

Origin: Lateral epicondyle of the humerus

Insertion: dorsal aspects of bases of middle and distal phalanges of 2nd-5th fingers

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14
Q

What is the function of extensor digitorum?

A

Extends index to little fingers

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15
Q

What innervates extensor digitorum?

A

Posterior antebrachial interosseous nerve (C7-8)

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16
Q

Arterial supply of Extensor digitorum?

A

Radial recurrent artery, anterior and posterior interosseous arteries

17
Q

What are the origins and insertions of extensor carpi ulnaris?

A

Origin: Lateral epicondyle of humerus, posterior ulna

Insertion: MEdial aspect of base of 5th metacarpal

18
Q

What is the function of extensor carpi ulnaris

A

Extends and adducts hand at radiocarpal joint

19
Q

What innervates the extensor carpi ulnaris muscle?

A

Posterior antebrachial interosseous nerve

20
Q

What supples the extensor carpi ulnaris with blood

A

Radial recurrent artery, posterior interosseous artery

21
Q

What are the origins/insertions of the supinator muscle?

A

Origin: Lateral epicondyle of humerus, supinator crest and fossa of ulna

Insertion: Anterior, lateral, posterior aspects of proximal 1/3 radius

22
Q

What is the function of supinator

A

Supinates at radioulnar joint

23
Q

What innervates the supinator

A

Posterior antebrachial interosseous nerve (C6-7)

24
Q

WHat supplies the supinator with blood

A

Radial recurrent artery, posterior and recurrent interosseous arteries

25
WHat is the origin of abductor pollicis longus
Origin: Posterior proximal half of ulna, medial middle 1/3 radius Insertion:Lateral aspect of base of first metacarpal
26
What is the function of the abductor pollicis longus
Abducts and extends thumb at first carpometacarpal joint
27
What innervates abductor pollicis longus
Posterior antebrachial interosseous nerve (C7-8)
28
What are the origins/insertions of extensor pollicis brevis
Origins: Posterior distal radius, Insertion: Dorsal base of proximal thumb phalanx
29
What is the function of extensor pollicis brevis
Extends thumb
30
What innervates extensor pollicis brevis
Posterior antebrachial interosseous nerve (C7-8)
31
What supplies extensor pollicis brevis with blood
Anterior and posterior interosseous arteries
32
What are the origins/insertions of extensor pollicis longus
Origins: Posterior middle ulna, Insertion: Dorsal aspect of base of distal phalanx of thumb
33
What is the action of extensor pollicis longus?
Extends thumb
34
What innervates extensor pollicis longus
Posterior antebrachial interosseous nerve (C7-8)
35
What supplies the extensor pollicis longus with blood?
Anterior and posterior interosseous arteries
36
What are the origins/insertions of extensor indicis
Origin: Posterior distal ulna Insertion: Extensor expansion of middle finger
37
What is the action of the extensor indicis?
Extends index finger
38
What innervates extensor indicis
Posterior antebrachial interosseous nerve (C7-8)
39
What supplies the extensor indicis with blood
Anterior and posterior interosseous arteries

Anatomy Y1 S2 (12 decks)

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