Q. Regarding synovial flexor sheaths in the hand and wrist, which one of the following is INCORRECT? (Solved)
1. they surround flexor tendons in the carpal tunnel
2. the superficial and deep flexors are invested with a common synovial sheath
3. the common flexor sheaths can communicate with flexor pollicis longus sheath in some people
4. for the index, ring and middle finger, a separate synovial sheath lines the fibrous sheath over the phalanges
5. the sheath is the origin of the lumbricals
- e. the sheath is the origin of the lumbricals