Foot Muscles: 4th Layer and Dorsum

Question 1

Dorsal interossei
(origin)

Answer 1

Adjacent sides of metatarsals

Question 2

Dorsal interossei
(insertion)

Answer 2

1st to medial side of second toe, 2-4 to lateral side of toes 2-4

Question 3

Dorsal interossei
(action)

Answer 3

abduct toes 1,3,4,5

Question 4

Dorsal interossei
(innervation)

Answer 4

Lateral plantar nerve

Question 5

Plantar interossei
(origin)

Answer 5

Medial side of metatarsals 3-5

Question 6

Plantar interossei
(insertion)

Answer 6

medial side of proximal phalanges 3-5

Question 7

Plantar interossei
(action)

Answer 7

adduct toes 3-5

Question 8

Plantar interossei
(innervation)

Answer 8

Lateral plantar nerve

Question 9

Extensor Digitorum Brevis
(origin)

Answer 9

Dorsal surface of calcaneus

Question 10

Extensor Digitorum Brevis
(insertion)

Answer 10

Middle and distal phalanges of toes 2-4 (with extensor digitorum longus tendon)

Question 11

Extensor Digitorum Brevis
(action)

Answer 11

Extend toes 2-4

Question 12

Extensor Digitorum Brevis
(innervation)

Answer 12

Deep fibular nerve

Question 13

Extensor Hallucis Brevis
(origin)

Answer 13

Dorsal Surface of calcaneus

Question 14

Extensor Hallucis Brevis
(insertion)

Answer 14

Base of proximal phalanx of 1st toe

Question 15

Extensor Hallucis Brevis
(action)

Answer 15

Extend 1st toe

Question 16

Extensor Hallucis Brevis
(innervation)

Answer 16

Deep Fibular nerve