Anatomy Which of the following best describes the forearm? A The median nerve is related anteriorly to flexor digitorum superficialis. B Pronator quadratus lies deep to the long flexor tendons just proximal to the wrist. C The ulnar nerve lies superficial to flexor carpi ulnaris. D Flexor digitorum profundus is paially supplied by the posterior interosseous nerve. 💡 Explanation Which of the following best describes the forearm? ✓ Correct Answer: B. Pronator quadratus lies deep to the long flexor tendons just proximal to the wrist.