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Intrinsic Muscles of the Hand (Hypothenar and thenar compartments) Flashcards

(13 cards)

1
Q

What is the origin of Opponens digiti minimi?

A

Hook of hamate and flexor retinaculum

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2
Q

What is the insertion of opponends digiti minimi?

A

Medial border of 5th metacarpal

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3
Q

What is the innervation for the hypothenar compartment?

A

Deep branch of ulnar nerve (C8, T1)

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4
Q

What is the action of the opponens digiti minimi?

A

Draws 5th metacarpal anteriorly and rotates it, bringing the little finger into opposition with thumb

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5
Q

What is the origin of abductor digiti minimi

A

Pisiform

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6
Q

What is the insertion of abductor digiti minimi

A

medial side of proximal phalynx of 5th finger

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7
Q

What is the origin of flexor digiti minimi brevis?

A

Hook of hamate and flexor retinaculum

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8
Q

What is the insertion of flexor digiti minimi brevis?

A

Medial side of base of proximal phalanx of little finger

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9
Q

What is the action of flexor digiti minimi brevis?

A

Flexes the proximal phalynx of the little finger

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10
Q

What is the origin of all of the thenar compartment muscles?

A

Flexor retinaculum and tubercules of scaphoid and trapezium

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11
Q

What is the innervation of all of the thenar compartment muscles?

A

Recurrent branch of median nerve (C8, T1)

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12
Q

What is the insertion of opponens pollicis

A

Lateral side of 1st metacarpal

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13
Q

What is the insertion of abductor pollicis brevis and flexor pollicis brevis

A

Lateral side of base of proximal phalanx of thumb

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