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Layers of the Foot (Second Layer (Lumbricals (Innervation: Medial Plantar…

- - - - Action: flex proximal phalanges, extend middle and distal phalanges of lateral four digits
  - - - Action: muscle flexes lateral four digits
  - - - Action: flexes first digit
  - - - Action: assists flexor digitorum longus in flexing lateral four digits
- - - - Action: abducts and flexes first digit
  - - - Action: abducts and flexes fifth digit
  - - - Action: flexes lateral four digits
- - - - Action: flexes proximal phalanx of fifth digit
  - - - Action: Oblique head & Transverse head adduct first digit; assist in transverse arch of foot by metatarsals medially
  - - - Action: flexes proximal phalanx of 1st digit
- - - - Action: adduction of 3rd-5th digits and flex metatarsophalangeal joints
  - - - Action: abduction of 2nd-4th digits and flex metatarsophalangeal joints