Hand and Thumb Muscles Flashcards Preview

Anatomy Muscles > Hand and Thumb Muscles > Flashcards

Flashcards in Hand and Thumb Muscles Deck (7)
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1

Abductor Pollicis Brevis Muscle

ORIGIN: Flexor Retinaculum, Trapezium, Scaphoid Tubercles

INSERTION: Proximal Phalanx of Thumb

ACTION: Abduction + Assisting in Opposition

2

Flexor Pollicis Brevis Muscle

ORIGIN: Flexor Retinaculum, Trapezium, Trapezoid and Capitate

INSERTION: Proximal Phalanx of Thumb

ACTION: Flexion + Assisting in Opposition

3

Opponents Pollicis Muscle

ORIGIN: Flexor retinaculum + Tubercle of Trapezium

INSERTION: Whole first Metacarpal bone, radial surface

ACTION: Opposition of the thumb at Carpometacarpal Joint

4

Adductor Pollicis Muscle

ORIGIN: Capitate, 2-3d Metacarpals

INSERTION: Proximal Phalanx of Thumb

ACTION: Adduction + Assisting in Flexion

5

Abductor Digiti Minimi Muscle

ORIGIN: Pisiform + tendon of Flexor Carpi Ulnaris

INSERTION: Proximal Phalanx of 5th finger, Ulnar Surface

ACTION: Abduction + Assisting in Opposition

6

Flexor Digiti Minim Brevis Muscle

ORIGIN: Hook of Hamate + Retinaculum Flexor

INSERTION: Proximal Phalanx of 5th finger, palmar surface

ACTION: Flexion + Assisting in Opposition

7

Opponens Digiti Minimi Muscle

ORIGIN: Hook of Hamate + Flexor Retinaculum

INSERTION: Shaft of 5th Metacarpal

ACTION: Opposition at the Carpometacarpal Joint