Third layer of palmar foot

Question 1

Origins of flexor hallucis brevis

Answer 1

Plantar surface of cuboid and lateral cuneiforms

Tendon of tibialis posterior

Question 2

Insertion of flexor hallucis brevis

Answer 2

Base of proximal phalanx of big toe

Question 3

Action of flexor hallucis brevis

Answer 3

Flexes big toe at MTP joint

Question 4

Innervation of flexor hallucis brevis

Answer 4

Medial plantar nerve

Question 5

Origins of adductor hallucis

Answer 5

Oblique head - bases of first 4 metatarsals

Transverse head - plantar ligaments of MTP joints

Question 6

Insertion of adductor hallucis

Answer 6

Lateral base of proximal phalanx of big toe

Question 7

Action of adductor hallucis

Answer 7

Adducts big toe

Assists in forming transverse arch of foot

Question 8

Innervation of adductor hallucis

Answer 8

Deep branch of lateral plantar nerve

Question 9

Origin of flexor digiti minimi brevis

Answer 9

Base of metatarsal 5

Question 10

Insertion of flexor digiti minimi brevis

Answer 10

Base of proximal phalanx of little toe

Question 11

Action of flexor digiti minimi brevis

Answer 11

Flexes proximal phalanx of little toe

Question 12

Innervation of flexor digiti minimi brevis

Answer 12

Superficial branch of lateral plantar nerve

Question 13

Muscles of the third layer of plantar foot

Answer 13

Flexor hallucis brevis
Adductor hallucis
Flexor digiti minimi brevis