5. foot muscles

Question 1

extensor digitorum brevis origin and insertion

Answer 1

or
- supralateral calcaneous

in
- base of proximal phalanx of big toe and tendons of extensor digitorum longus of toes 2-4

Question 2

extensor digitorum brevis action

Answer 2

extends digits 1-4

Question 3

extensor digitorum brevis innervation

Answer 3

deep fibular nerve

Question 4

dorsal interossei origin and insertion

Answer 4

or
- sides of adjacent metatarsals (b/w 1&2 to 4&5)

in
- base of proximal phalanges of toes 2-4

Question 5

dorsal interossei action

Answer 5

• abduct digits (2-4)

- flex metatarsophalangeal joints

Question 6

dorsal interossei innervation

Answer 6

all by lateral plantar nerve

1st and 2nd also by deep fibular nerve

Question 7

abductor digiti minimi origin and insertion

Answer 7

or
- calcaneal tuberosity

in
- lateral side of proximal phalanx of toe 5

Question 8

abductor digiti minimi action

Answer 8

abduction and flexion of toe 5

Question 9

abductor digiti minimi innervation

Answer 9

lateral plantar nerve

Question 10

flexor digitorum brevis origin and insertion

Answer 10

or
- medial calcaneal tuberosity

in
- plantar side middle phalanges toes 2-5

Question 11

flexor digitorum brevis action

Answer 11

flexes lateral 4 digits

Question 12

flexor digitorum brevis innervation

Answer 12

medial plantar nerve

Question 13

quadratus plantae origin and insertion

Answer 13

or
- medial and lateral calcaneous

in
- lateral side of flexor digitorum longus tendon

Question 14

quadratus plantae action

Answer 14

Assists flexor digitorum longus in flexion of toes 2-5

Question 15

quadratus plantae innervation

Answer 15

lateral plantar nerve

Question 16

lumbricals origin and insertion

Answer 16

or
- tendons of flexor digitorum longus

in
- medial side of phalanges of toes 2-5

Question 17

lumbricals action

Answer 17

Flexes metatarsophalangeal joints, extends interphalangeal joints

Question 18

lumbricals innervation

Answer 18

1st lumbrical (toe 2)
- medial plantar nerve

2nd to 4th (toes 3-5)
- lateral plantar nerve

Question 19

flexor hallucis brevis origin and insertion

Answer 19

or

• plantar side of cuboid and lateral cuniform
• tendon of tibialis posterior

in
- lateral and medial of proximal phalanx of big toe

Question 20

flexor hallucis brevis action

Answer 20

flex big toe

Question 21

flexor hallucis brevis innervation

Answer 21

medial plantar nerve

Question 22

flexor digiti minimi brevis origin and insertion

Answer 22

or
- base of metatarsal 5

in
- proximal phalanx of 5th toe

Question 23

flexor digiti minimi brevis action

Answer 23

flex metatarsalphalangeal joint 5th toe

Question 24

flexor digiti minimi brevis innervation

Answer 24

lateral plantar nerve

Question 25

adductor hallucis origins

Answer 25

transverse head
- ligaments of metatarsophalangeal joints of toes 3-5

oblique head
- base of metatarsals 2-4

Question 26

adductor hallucis insertion

Answer 26

both

- lateral side of proximal phalanx of big toe

Question 27

adductor hallucis innervation

Answer 27

lateral plantar nerve

Question 28

adductor hallucis action

Answer 28

adduct hallucis

Question 29

plantar interossei origin and insertion

Answer 29

or
- medial sides of metatarsals 3-5

in
- proximal phalanges of toes 3-5

Question 30

plantar interossei action

Answer 30

adduction toes

Question 31

plantar interossei innervation

Answer 31

lateral plantar nerve

Question 32

foot muscles innervated by deep fibular nerve

Answer 32

extensor digitorum brevis
1st and 2nd dorsal interossei
- (all dorsal interossei inn. by lateral planter nerve)