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Question 1

Insertion of flexor digitorum

Answer 1

2nd to 5th distal phalanges (bases)

Question 2

Innervation of flexor digitorum longus

Answer 2

Tibial n. (L5-S2)

Question 3

Action of flexor digitorum longus

Answer 3

Talocrural joint: plantar flexion
Subtalar joint: inversion (supination)
MTP and IP joints of the 2nd to 5th toes: plantar flexion

Question 4

Origin of flexor hallucis longus

Answer 4

fibula (distal two thirds of posterior surface), adjacent interosseous membrane

Question 5

Insertion of flexor hallucis longus

Answer 5

1st distal phalanx (base)

Question 6

Innervation of flexor hallucis longus

Answer 6

Tibial n (L5-S2)

Question 7

Action for flexor hallucis longus

Answer 7

talocrural joint: plantar flexion
subtalar joint: inversion (supination)
MTP and IP joints of the 1st toe: plantar flexion
supports the medial longitudinal arch

Question 8

Origin of tibialis posterior

Answer 8

Interosseous membrane, adjacent borders of tibia and fibula

Question 9

Insertion of tibialis posterior

Answer 9

navicular tuberosity; cuneiforms (medial, intermediate, and lateral); 2nd to 4th metatarsals (bases)

Question 10

Innervation of tibialis posterior

Answer 10

tibial nerve (L4, L5)

Question 11

Action of tibialis posterior

Answer 11

talocrural joint: plantar flexion
subtalar joint: inversion (supination)
supports the longitudinal and transverse arches

Question 12

Origin of flexor digitorum brevis

Answer 12

Calcaneal tuberosity (medial tubercle), plantar aponeurosis

Question 13

insertion of flexor digitorum brevis

Answer 13

2nd to 5th toes (sides of middle phalanges)

Question 14

Innervation of flexor digitorum brevis

Answer 14

medial plantar nerve (S1, S2)

Question 15

Action of flexor digitorum brevis

Answer 15

flexes the MTP and PIP joints of 2nd to 5th toes

supports the longitudinal arch

Question 16

origin of abductor digiti minimi

Answer 16

calcaneal tuberosity (medial tubercle), plantar aponeurosis

Question 17

Insertion of abductor digiti minimi

Answer 17

5th toe (base of proximal phalanx), 5th metatarsal (at tuberosity)

Question 18

Innervation of abductor digiti minimi

Answer 18

lateral plantar nerve (S1-S3)

Question 19

Action of abductor digiti minimi

Answer 19

flexes the MTP joint of the 5th toe
abducts the 5th toe
supports the longitudinal arch

Question 20

Origin of quadratus plantae

Answer 20

Calcaneal tuberosity (medial and plantar borders of plantar side)

Question 21

Insertion of quadratus plantae

Answer 21

flexor digitorum longus tendon (lateral border)

Question 22

innervation of quadratus plantae

Answer 22

lateral plantar nerve (S1-S3)

Question 23

Action of quadratus plantae

Answer 23

redirects and augments the pull of flexor digitorum longus

Question 24

Origin of lumbricals (four muscles)

Answer 24

flexor digitorum longus tendons (medial borders)

Question 25

Insertion of lumbricals (four muscles)

Answer 25

2nd to 5th toes (at dorsal aponeuorses)

Question 26

Innervation of 1st lumbrical

Answer 26

medial plantar nerve (S2, S3)

Question 27

innervation of 2nd to 4th lumbrical

Answer 27

lateral plantar nerve (S2, S3)

Question 28

Action of lumbricals (four muscles)

Answer 28

flexes the MTP joints of 2nd to 5th toes
extension of IP joints of 2nd to 5th toes
adducts 2nd to 5th toes toward the big toe

Question 29

Origin of flexor digitorum longus

Answer 29

Tibia (middle third of posterior surface)