Short Hand Muscles Flashcards by Andrew Fernandez | Brainscape

Q

Lumbricals (3 and 4)

A

Origin: Medial three tendons of flexor digitorum profundus

Insertion: Lateral sides of extensor expansions of 2nd-5th fingers

Innervation: Ulnar Nerve (C8, T1)

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Q

Lumbricals (1 and 2)

A

Origin: Lateral two tendons of flexor digitorum profundus

Insertion: Lateral sides of extensor expansions of 2nd-5th fingers

Innervation: Median Nerve (C8, T1)

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Q

Dorsal Interosseous, 1-4

A

Origin: Adjacent sides of two metacarpals

Insertion: Bases of proximal phalanges; extensor expansions of 2nd-4th fingers

Innervation: Ulnar Nerve (C8, T1)

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Q

Palmar Interosseous, 1-3

A

Origin: Palmar surfaces of 2nd, 4th, and 5th metacarpals

Insertion: Bases of proximal phalanges; extensor expansions of 2nd, 4th, and 5th fingers

Innervation: Ulnar Nerve (C8, T1)

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