Unit 2 - Upper Limb: Thenar Muscles (Ex. II) Flashcards Preview

Gross Anatomy '15 Ex. II > Unit 2 - Upper Limb: Thenar Muscles (Ex. II) > Flashcards

Flashcards in Unit 2 - Upper Limb: Thenar Muscles (Ex. II) Deck (4)
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1
Q

abductor pollicis brevis

A

O: scaphoid and trapezium; flexor retinaculum
I: base of proximal phalanx of thumb via radial sesamoid
Inn: median N (C8, T1)
A: abduction @ CMC joint of thumb

2
Q

flexor pollicis brevis

A

O: superficial head - flexor retinaculum; deep head - capitate and trapezium
I: base of proximal phalanx of thumb via radial sesamoid
Inn: superficial head - median N (C8, T1); deep head - ulnar N (C8, T1)
A: flexion @ CMC joint of thumb

3
Q

opponens pollicis

A

O: trapezium
I: radial border of 1st metacarpal
Inn: median N (C8, T1)
A: opposition @ CMC joint of thumb

4
Q

adductor pollicis

A

O: transverse head - palmar surface of 3rd metacarpal; oblique head - capitate and bases of 2nd and 3rd metacarpals
I: base of proximal phalanx of thumb via ulnar sesamoid
Inn: ulnar N (C8, T1)
A: adduction @ CMC joint of thumb; flexion @ MCP joint of thumb

Decks in Gross Anatomy '15 Ex. II Class (58):