In human anatomy, the flexor<unk><unk>  is a muscle in the forearm that flexes the fingers. It is considered to be an extrinsic muscle because its action is at a different location than the main body of the muscle.
Flexor<unk><unk> , along with flexor<unk>  superficialis have long tendons that run down the arm and through the carpal tunnel and attach to the palmar side of the phalanges of the fingers. This muscle originates from the anterior side of the ulna.
Flexor<unk><unk>  lies deep to superficialis, but it attaches more distally. To get around this problem<unk> 's tendons go through the tendons of superficialis, and end up attaching to the distal phalanx.
Flexor digitorum profundus muscle
Flexor hallucis brevis muscle
Tibialis posterior muscle
Flexor hallucis longus muscle
Sartorius muscle
Tibialis anterior muscle
Extensor hallucis longus muscle
Quadratus plantae muscle