Question:easy
Anterior interosseous nerve is a branch of?
Anterior interosseous nerve is a branch of?
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Think of the deep forearm flexor motor branch and its parent trunk that passes through pronator teres.
Updated On: Jun 24, 2026
- Radial nerve
- Median nerve
- Ulnar nerve
- Axillary nerve
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Recall the median nerve course. After it passes between the two heads of pronator teres in the forearm, it sends off a deep motor twig called the anterior interosseous nerve.
Step 2: This twig descends along the front of the interosseous membrane and powers the deep forearm flexors (flexor pollicis longus, radial half of flexor digitorum profundus, and pronator quadratus).
Step 3: A common trap pairs the nerve with the ulnar artery. Remember that the matching artery (anterior interosseous artery) comes off the ulnar side, but the nerve itself belongs only to the median nerve.
Step 4: Eliminating the radial, ulnar, and axillary options leaves the median nerve as the parent trunk.
\[\boxed{\text{Median nerve}}\]
Step 2: This twig descends along the front of the interosseous membrane and powers the deep forearm flexors (flexor pollicis longus, radial half of flexor digitorum profundus, and pronator quadratus).
Step 3: A common trap pairs the nerve with the ulnar artery. Remember that the matching artery (anterior interosseous artery) comes off the ulnar side, but the nerve itself belongs only to the median nerve.
Step 4: Eliminating the radial, ulnar, and axillary options leaves the median nerve as the parent trunk.
\[\boxed{\text{Median nerve}}\]
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