Which of the following flexor tendons of the forearm is NOT contained within the anatomical boundaries of the carpal tunnel?

Explanation:
The carpal tunnel contains exactly 9 tendons (four FDS, four FDP, one FPL) and the median nerve. The flexor carpi radialis (FCR) tendon runs in its own separate fibro-osseous tunnel situated within the transverse carpal ligament, outside the carpal tunnel proper. Reference: Green's Operative Hand Surgery.