Intrinsic Muscles of the Foot - 3rd Layer

Question 1

Flexor Hallucis Brevis

Answer 1

origin: metatarsal 1
insertion: base of the proximal phalanx of digit 1
innervation: medial plantar N.
action: flexion of the great toe

Question 2

Adductor Hallucis:

Transverse Head

Oblique Head

Answer 2

origin: TH - head of metatarsals 2-5, OH - base of metatarsals 2-5
insertion: base of the proximal phalanx of digit 1
innervation: deep branch of lateral plantar N.
action: adduction of great toe

Question 3

Flexor Digiti Minimi Brevis

Answer 3

origin: 5th metatarsal
insertion: base of the proximal phalanx of digit 5
innervation: superficial branch of lateral plantar N.
action: flexion of the small toe