Extends from tuberosity of calcaneus and ends in 5 slips that attach to skin over heads of the 5 metatarsals and into flexor tendon sheaths. Flexes lateral four digits. The major Nn and vessels to the sole of the foot enter the region between the 1st and 2nd muscular layers . Flex proximal phalanges and extend middle and distal phalanges of lateral four digits. Flexes proximal phalanx of fifth digit.
Veins accompany the arteries listed above.
Abducts digits 2 - 4 and flexes metatarsophalangeal joints. Adducts digits 2 - 4 and flexes metatarsophalangeal joints. Diagram both the superficial and deep venous drainage of the foot.