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Anatomy 2200 > Upper Limb 4 > Flashcards

Upper Limb 4 Flashcards

1
Q

What are the muscles of the posterior superficial compartment of the forearm?

A

extensor carpi radialis longus
extensor carpi radialis brevis
extensor digitorum
extensor carpi ulnaris

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2
Q

What are the muscles of the posterior deep compartment of the forearm?

A

supinator
abductor pollicis longus
extensor pollicis longus
extensor indicis
extensor pollicis brevis

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3
Q

What is the origin, insertion, action, innervation of the extensor carpi radialis longus?

A

O: lateral supracondylar ridge
I: 2nd metacarpal
A: extension and abduction hand
IN: radial nerve

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4
Q

What is the origin, insertion, action, innervation of the extensor carpi radialis brevis?

A

O: lateral epicondyle humerus
I: 3rd metacarpal
A: extension and abduction hand
IN: radial nerve

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5
Q

What is the origin, insertion, action, innervation of the extensor digitorum?

A

O: lateral epicondyle humerus
I: expansion of medial 4 digits
A: extension at MCP and wrist joint
IN: radial nerve

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6
Q

What is the origin, insertion, action, innervation of the extensor carpi ulnaris?

A

O: lateral epicondyle humerus
I: 5th metacarpal
A: extension and adduction hand
IN: radial nerve

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7
Q

What is the origin, insertion, action, innervation of the supinator?

A

O: lateral epicondyle humerus & ulna
I: 1/3 of radius
A: supination
IN: radial nerve

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8
Q

What is the origin, insertion, action, innervation of the abductor pollicis longus?

A

O: ulna
I: 1st metacarpal
A: abduction and extension thumb
IN: radial nerve

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9
Q

What is the origin, insertion, action, innervation of the extensor indicis?

A

O: ulna
I: expansion of 2nd digit
A: extension 2nd digit
IN: radial nerve

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10
Q

What is the origin, insertion, action, innervation of the extensor pollicis longus?

A

O: 1/3 ulna
I: distal phalanx of thumb
A: extension distal phalanx of thumb
IN: radial nerve

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11
Q

What is the origin, insertion, action, innervation of the extensor pollicis brevis?

A

O: radius
I: proximal phalanx of thumb
A: extension proximal phalanx of thumb
IN: radial nerve

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12
Q

What are the structures in the anatomical snuffbox?

A

radial artery
radial nerve
scaphoid bone
- tendons of EPL, APL, EPB

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13
Q

What are the extrinsic muscles that act on the thumb?

A

flexor pollicis longus
abductor pollicis longus
extensor pollicis longus
extensor pollicis brevis

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14
Q

What are the intrinsic muscles that act on the hand?

A

abductor pollicis brevis (thenar muscles)
flexor pollicis brevis
opponens pollicis
adductor pollicis

abductor digiti minimi (hypothenar muscles)
opponens digiti minimi
flexor digiti minimi

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15
Q

What is the origin, insertion, action, innervation of the abductor pollicis brevis?

A

O: scaphoid and trapezium
I: proximal phalanx of thumb
A: abduction thumb
IN: median nerve

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16
Q

What is the origin, insertion, action, innervation of the flexor pollicis brevis?

A

O: scaphoid and trapezium
I: proximal phalanx of thumb
A: flexion thumb
IN: median nerve

17
Q

What is the origin, insertion, action, innervation of the opponens pollicis?

A

O: scaphoid and trapezium
I: lat side 1st metacarpal
A: oppose thumb toward centre
IN: median nerve

18
Q

What is the origin, insertion, action, innervation of the adductor pollicis?

A

O: (oblique) 2nd metacarpal & (transverse) 3rd metacarpal
I: medial side 1st metacarpal
A: adduct
IN: ulnar nerve

19
Q

What is the origin, insertion, action, innervation of the abductor digiti minimi?

A

O: pisiform
I: proximal phalanx of 5th digit
A: abduction
IN: ulnar nerve

20
Q

What is the origin, insertion, action, innervation of the flexor digiti minimi brevis?

A

O: hamate
I: proximal phalanx of 5th digit
A: flexion
IN: ulnar nerve

21
Q

What is the origin, insertion, action, innervation of the opponens digiti minimi?

A

O: hamate
I: medial 5th metacarpal
A: opposition
IN: ulnar nerve

22
Q

What are the palmar muscles?

A

lumbricals and interosseus

23
Q

What are the 7 interossei?

A

3 palmar interossei (PAD) adduction
4 dorsal interossei (DAB) abduction
- ulnar nerve

24
Q

What are the lumbricals?

A
  • flexion at MCP + extension at IP
  • 1/2 (lateral) = median nerve
  • 3/4 (medial) = ulnar nerve

Anatomy 2200 (12 decks)

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