Foot Muscles

Question 0

Second layer of sole of foot

Answer 0

Quadratus plantae and lumbricals

Question 1

First layer of muscles of sole of foot

Answer 1

Abductor hallucis, flexor digitorum brevis, abductor digiti minimi

Question 2

Third layer of sole of foot

Answer 2

Flexor hallucis brevis, adductor hallucis, flexor digiti minimi brevis

Question 3

Fourth layer of sole of foot

Answer 3

Plantar interossei (3) and dorsal interossei (4)

Question 4

Abductor hallucis origin

Answer 4

Medial tubercle of tuberosity of calcaneus, flexor retinaculum and plantar aponeurosis

Question 5

Abductor hallucis insertion

Answer 5

Medial side of base of proximal phalanx of 1st digit

Question 6

Abductor hiatus innervation

Answer 6

Medial plantar nerve

S2, s3

Question 7

Abductor hiatus action

Answer 7

Abducts and flexes first digit

Question 8

Flexor digitorum brevis origin

Answer 8

Medial tubercle of tuberosity of calcaneus, plantar aponeurosis, and intermuscular septa

Question 9

Flexor digitorum brevis insertion

Answer 9

Both sides of middle phalanges of lateral four digits

Question 10

Flexor digitorum brevis innervation

Answer 10

Medial plantar nerve

S2, s3

Question 11

Flexor digitorum brevis action

Answer 11

Flexes lateral four digits

Question 12

Abductor digiti minimi origin

Answer 12

Medial and lateral tubercles of tuberosity of calcaneus, plantar aponeurosis and intermuscular septa

Question 13

Abductor digiti minimi insertion

Answer 13

Lateral side of base of proximal phalanx of fifth digit

Question 14

Abductor digiti minimi innervation

Answer 14

Lateral plantar nerve

S2, s3

Question 15

Abductor digiti minimi action

Answer 15

Abducts and flexes fifth digit

Question 16

Quadratus plantae origin

Answer 16

Medial surface and lateral margin of plantar surface of calcaneus

Question 17

Quadratus plantae insertion

Answer 17

Posterolateral margin of tendon of flexor digitorum brevis

Question 18

Quadratus plantae innervation

Answer 18

Lateral plantar nerve

S2, s3

Question 19

Quadratus plantae action

Answer 19

Assists flexor digitorum longus in flexing lateral four digits

Question 20

Lumbricals origin

Answer 20

Tendons of flexor digitorum longus

Question 21

Lumbricals insertion

Answer 21

Medial aspect of expansion over lateral four digits

Question 22

Lumbricals innervation

Answer 22

Medial one: medial plantar nerve, s2, s3

Lateral three: lateral plantar nerve, s2, s3

Question 23

Lumbricals action

Answer 23

Flex proximal phalanges, extend middle and distal phalanges of lateral four digits

Question 24

Flexor hallucis brevis origin

Answer 24

Plantar surfaces of cuboid and lateral cuneiform

Question 25

Flexor hallucis brevis insertion

Answer 25

Both sides of base of proximal phalanx of 1st digit

Question 26

Flexor hallucis brevis innervation

Answer 26

Medial plantar nerve s2, s3

Question 27

Flexor hallucis brevis action

Answer 27

Flexes proximal phalanx of 1st digit

Question 28

Adductor hallucis origin

Answer 28

Oblique head: bases of metatarsals 2-4 | Transverse head: plantar ligaments of 3rd to 5th metatarsophalangeal joints

Question 29

Adductor hallucis insertion

Answer 29

Tendons of both heads attach to lateral side of base of proximal phalanx of 1st digit

Question 30

Adductor hallucis innervation

Answer 30

Deep branch of lateral plantar nerve | S2, s3

Question 31

Adductor hallucis action

Answer 31

Adducts first digit | Assists in maintaining transverse arch of foot

Question 32

Flexor digiti minimi brevis origin

Answer 32

Base of fifth metatarsal

Question 33

Flexor digiti minimi brevis insertion

Answer 33

Base of proximal phalanx of fifth digit

Question 34

Flexor digiti minimi brevis innervation

Answer 34

Superficial branch of lateral plantar nerve | S2, s3

Question 35

Flexor digiti minimi brevis action

Answer 35

Flexes proximal phalanx of fifth digit

Question 36

Flexor digiti minimi brevis innervation

Answer 36

Superficial branch of lateral plantar nerve s2, s3

Question 37

Flexor digiti minimi action

Answer 37

Flexes proximal phalanx of fifth digit, thereby assisting with its flexion

Question 38

Plantar interossei origin

Answer 38

Bases and medial sides of metatarsals 3-5

Question 39

Plantar interossei insertion

Answer 39

Medial sides of bases of proximal phalanges of 3rd-5th digits

Question 40

Plantar interossei innervation

Answer 40

Lateral plantar nerve | S2, s3

Question 41

Plantar interossei action

Answer 41

Adduct digits 3-5 and flex metatarsophalangeal joints

Question 42

Dorsal interossei origin

Answer 42

Adjacent sides of metatarsals 1-5

Question 43

Dorsal interossei insertion

Answer 43

First: medial side of proximal phalanx of 2nd digit | Second to fourth: lateral sides of 2nd to 4th digits

Question 44

Dorsal interossei innervation

Answer 44

Lateral plantar nerve | S2, s3

Question 45

Dorsal interossei action

Answer 45

Abduct digits 2-4 and flex metatarsophalangeal joints