The carpal tunnel contains the tendons of which muscles along with the median nerve?

• A Flexor digitorum superficialis (×4), flexor digitorum profundus (×4), flexor pollicis longus, median nerve ✓
• B Flexor digitorum superficialis (×4), flexor digitorum profundus (×4), flexor carpi radialis, median nerve
• C Flexor digitorum superficialis (×4), flexor pollicis longus, flexor carpi radialis, median nerve
• D Flexor digitorum superficialis (×4), flexor digitorum profundus (×4), flexor pollicis longus, ulnar nerve

Explanation

The carpal tunnel (bounded by the flexor retinaculum and carpal bones) contains 9 tendons and the median nerve: 4 tendons of flexor digitorum superficialis, 4 tendons of flexor digitorum profundus, and 1 tendon of flexor pollicis longus — total 9 tendons + the median nerve. Flexor carpi radialis passes through its own separate tunnel within the flexor retinaculum. The ulnar nerve passes superficial to the flexor retinaculum through Guyon's canal.

Reference: BD Chaurasia's Human Anatomy, 8th ed.

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