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Hand Muscles PTA

Category: Answer

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Created by: dwylinmiller

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Question	Answer
Flexor Pollicus Brevis	ORIGIN:flexor retinaculum trapezium. INSERTION: thumb. NERVE: median thenar branch. ACTION:Flexes the thumb at the first metacarpophalangeal joint.
Oponens Digiti Minimi	ORIGIN:flexor retinaculum,hamate.INSERTION:ulnar medial border(5th metacarpal).ACTION:draws 5th metacarpal anteriorly and rotates it,bringing little finger into oposition with the thumb.
Flexor digiti minimi	ORIGIN:flexor retinaculum (hamate). INSERTION:proximal phalanx (little finger)NERVE:deep branch ulnar.ACTION:flexes proximal phalanx of 5th finger.
Palmar Interosseous	ORIGIN: sides of metacarpals.INSERTION:extension expansion hood of digits 2,4,5. NERVE:deep branch ulnar.ACTION:adduction of fingers.
Abductor Pollicus Brevis	Origin:flexor retinaculum trapezeum. INSERTION:lateral proximal phalanx of thumb.NERVE: median thenar branch.ACTION:abducts thumb and helps opose it.
Lumbricals	ORIGIN:tendons of flexor digitorum profundus.INSERTION:extension expansion hood of medial 4 digits.NERVE:deep branch ulnar(medial 2 L's) median (lateral 2 L's).ACTION:flexes fingers and extends interphalgeal joints.
Abductor digiti minimi	ORIGIN:flexor retinaculum pisiform. INSERTION:proximal phalanx of little finger.NERVE:deep branch ulnar. ACTION:abducts pincky finger.
Dorsal Interosseous Muscles	ORIGIN:sides of metacarpals.INSERTION:extension expansion hood of digits 2-4.NERVE:deep branch ulnar. ACTION:abducts fingers.
Palmaris Brevis	ORIGIN: anterior retinaculum and palmer aponeurosis.INSERTION:skin ulnar border of hand.NERVE:superficial ulnar. ACTION:pulls on skin over thenar eminence, deepening cup of the palm and improving grip.
Opponens Pollicus	ORIGIN: flexor retinaculum, trapezium. INSERTION:radial border 1st metacarpal. NERVE:median thenar branch.ACTION:draws 1st metacarpal laterally to opose the thumb toward center of palm and rotates it medially.
Adductor Policus	ORIGIN:capitate and base of adjacent metacarpals. INSERTION:proximal phalanks of thumb.NERVE:deep branch of ulnar.ACTION:draws thumb toward palm and rotates it medialy.

retinaculum	ORIGIN:flexor _____ (hamate). INSERTION:proximal phalanx (little finger)NERVE:deep branch ulnar.ACTION:flexes proximal phalanx of 5th finger.	3	1	true
Palmar Interosseous	Answer: ORIGIN: sides of metacarpals.INSERTION:extension expansion hood of digits 2,4,5. NERVE:deep branch ulnar.ACTION:adduction of fingers.	4	0	false
phalanx	Origin:flexor retinaculum trapezeum. INSERTION:lateral proximal _____ of thumb.NERVE: median thenar branch.ACTION:abducts thumb and helps opose it.	5	1	true
Lumbricals	Answer: ORIGIN:tendons of flexor digitorum profundus.INSERTION:extension expansion hood of medial 4 digits.NERVE:deep branch ulnar(medial 2 L's) median (lateral 2 L's).ACTION:flexes fingers and extends interphalgeal joints.	6	0	false
Interosseous	Dorsal _____ Muscles	8	0	true
Palmaris Brevis	Answer: ORIGIN: anterior retinaculum and palmer aponeurosis.INSERTION:skin ulnar border of hand.NERVE:superficial ulnar. ACTION:pulls on skin over thenar eminence, deepening cup of the palm and improving grip.	9	0	false
Opponens Pollicus	Answer: ORIGIN: flexor retinaculum, trapezium. INSERTION:radial border 1st metacarpal. NERVE:median thenar branch.ACTION:draws 1st metacarpal laterally to opose the thumb toward center of palm and rotates it medially.	10	0	false
Adductor Policus	Answer: ORIGIN:capitate and base of adjacent metacarpals. INSERTION:proximal phalanks of thumb.NERVE:deep branch of ulnar.ACTION:draws thumb toward palm and rotates it medialy.	11	0	false