Anatomy Of Lumbrical Muscles In The Hand

Anatomy Of Lumbrical Muscles In The Hand

Question 1. Give the origin, insertion, nerve supply, and actions of lumbrical muscles.
Answer.

The origin and insertion of lumbrical muscles.

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Origin and Insertion of Lumbrical Muscles

Lumbrical Muscles Nerve Supply

First and 2nd lumbricals are supplied by the median nerve, whereas 3rd and 4th lumbricals are supplied by the deep branch of the ulnar nerve.

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Lumbrical Muscles Actions

Flexion of metacarpophalangeal (MP) joints and extension of proximal and distal interphalangeal (PIP + DIP) joints.