#evolutionary anatomy

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1st Layer of Plantar Muscles

Includes: -> Flexor digitorum brevis -> Abductor hallucis -> Abductor digiti minimi

Innervated by tibial nerve branches

All have a calcaneal origin

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Rhomboid Minor

Runs from C7 to T1 spines to medial scapular border

Innervated by dorsal scapular nerve

Depresses the glenoid

Retracts the scapula

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Actions of Sartorius Muscle

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Vastus Intermedius Actions

-- part of the quadriceps femoris

-- extends the leg

-- prevents knee flexion

-- stabilizes the knee

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Obturator Nerve Muscles

Adductors of thigh

Gracilis

Obturator externus

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Biceps Femoris Long Head

Runs from ischial tuberosity to upper fibula

Extends hip

Flexes knee

Innervated by tibial division of the sciatic nerve

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Foot Flexor Digiti Minimi Brevis

Runs from fifth metatarsal base to the proximal phalanx of little toe

Innervated by the lateral plantar nerve

Flexes the little toe

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Lower Leg Nerve Divisions [Diagram]

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