Dorsal Interossei Muscles Of The Hand
Question 1. What are the interossei muscles? Describe their origin, insertion, nerve supply, and actions in brief.
Answer.
The interossei are small muscles present between the metacarpals. They are divided into two groups: palmar interossei and dorsal interossei; each group consists of four muscles.
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Interossei Muscles Origin and Insertion
The origin and insertion of the interossei muscles.
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Origin and Insertion of Interossei Muscles
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Interossei Muscles Nerve Supply
All the interossei are supplied by the deep branch of the ulnar nerve.
Interossei Muscles Actions
Palmar interossei adduct the digits while dorsal interossei abduct the digits.
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Mnemonic: PAD and DAB
(D, dorsal; P, palmar; AD, adductor; AB, abductor)
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