Question

What is the Nerve Supply of marked structure in the given image:

• A. Anterior interosseous nerve
• B. Posterior interosseous nerve
• C. Ulnar nerve
• D. Median nerve

Answer 1

The Correct Option is D

The nerve supply of a structure is a critical topic in anatomy. To determine the correct answer, it is essential to understand the distribution and function of the nerves mentioned. The Median nerve is a major nerve in the upper limb, originating from the brachial plexus. It is responsible for innervating several muscles in the forearm and hand, particularly the flexor muscles of the forearm, except for the flexor carpi ulnaris and the ulnar half of the flexor digitorum profundus, which are innervated by the ulnar nerve. In relation to the structures typically marked in anatomical images, the Median nerve commonly supplies the pronator teres, flexor carpi radialis, palmaris longus, and the flexor digitorum superficialis.

Nerve	Function
Median Nerve	Innervates most flexors in the forearm
Ulnar Nerve	Innervates flexor carpi ulnaris and the medial part of flexor digitorum profundus
Anterior Interosseous Nerve	Branch of the median nerve, innervates deep flexors
Posterior Interosseous Nerve	Branch of the radial nerve, innervates extensors of the forearm

Based on this anatomical understanding, the correct answer for the nerve supply of the marked structure in the image is the Median nerve.