This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
Interosseous membrane between radius and ulna is pierced by which structure 
Select and explain. 
A. Posterior interosseus nerve, B. Posterior interosseus aery, C. Anterior interosseus nerve, D. Anterior interosseus aery
D: Anterior interosseus aery
Answer: D: Anterior interosseus aery 
Explanation: Anterior interosseous aery pierces the interosseous membrane at the upper border of pronator quadratus to enter the extensor compament. Posterior interosseous aery passes through a gap above the interosseous membrane to the back of forearm . Anterior interosseous nerve is the branch of median nerve. Posterior interosseous nerve is the deep terminal branch of radial nerve. B D Chaurasia 7th edition Page no: 112,114