Interosseous membrane between radius and ulna is pierced by which structure
**Core Concept**
The interosseous membrane is a fibrous sheet connecting the radius and ulna bones in the forearm, serving as a ligamentous connection between these two bones. This membrane plays a crucial role in maintaining the structural integrity of the forearm and facilitating movements of the wrist and forearm.
**Why the Correct Answer is Right**
The correct answer is the anterior interosseous artery, which is a branch of the common interosseous artery that arises from the ulnar artery. The anterior interosseous artery pierces the interosseous membrane to supply the interosseous muscles and other structures in the forearm. This artery is essential for the blood supply of the forearm and plays a vital role in maintaining the viability of the forearm tissues.
**Why Each Wrong Option is Incorrect**
**Option A:** The posterior interosseous nerve is a branch of the radial nerve that pierces the supinator muscle, not the interosseous membrane.
**Option B:** The interosseous recurrent artery is a branch of the ulnar artery that supplies the ulnar head of the radius, but it does not pierce the interosseous membrane.
**Option C:** The interosseous veins are present in the interosseous membrane, but they are not the primary structure that pierces the membrane.
**Clinical Pearl / High-Yield Fact**
The anterior interosseous artery is a critical structure in the forearm, and damage to this artery can lead to ischemia of the forearm muscles, resulting in pain, weakness, and wasting of the forearm muscles.
**Correct Answer: C. The interosseous recurrent artery is a branch of the ulnar artery that supplies the ulnar head of the radius, but it does not pierce the interosseous membrane.