test 4 sole of foot

Question 1

first layer muscles

Answer 1

• abdctor hallucis
• flexor digitorum brevis
• abductor digiti minimi

Question 2

Abductor hallucis origin

Answer 2

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

Question 3

Abductor hallucis insertion

Answer 3

Medial side of base of proximal phalanx of 1st digit

Question 4

Abductor hallucisinnervation

Answer 4

Medial plantar nerve (S2, S3)

Question 5

Abductor hallucis action

Answer 5

Abducts and flexes 1st digit (great toe, hallux)

Question 6

Flexor digitorum brevis origin

Answer 6

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

Question 7

Flexor digitorum brevis insertion

Answer 7

Both sides of middle phalanges of lateral four digits

Question 8

Flexor digitorum brevis innervation

Answer 8

Medial plantar nerve (S2, S3)

Question 9

Flexor digitorum brevis action

Answer 9

Flexes lateral four digits

Question 10

Abductor digiti minimi origin

Answer 10

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

Question 11

Abductor digiti minimi insertion

Answer 11

Lateral side of base of proximal phalanx of 5th digit

Question 12

Abductor digiti minimi innervation

Answer 12

Lateral plantar nerve (S2, S3)

Question 13

Abductor digiti minimi action

Answer 13

Abducts and flexes 5th digit

Question 14

second layer muscles

Answer 14

• Quadratus Plantae

- Lumbricals

Question 15

Quadratus plantae origin

Answer 15

Medial surface and lateral margin of plantar surface of calcaneus

Question 16

Quadratus plantae insertion

Answer 16

Posterolateral margin of tendon of flexor digitorum longus

Question 17

Quadratus plantae innervation

Answer 17

Lateral plantar nerve (S2, S3)

Question 18

Quadratus plantaeaction

Answer 18

Assists flexor digitorum longus in flexing lateral four digits

Question 19

Lumbricals origin

Answer 19

Tendons of flexor digitorum longus

Question 20

Lumbricalsinsertion

Answer 20

Medial aspect of expansion over lateral four digits

Question 21

Lumbricals innervation

Answer 21

Medial one: medial plantar nerve (S2, S3)

Lateral three: lateral plantar nerve (S2, S3)

Question 22

Lumbricals action

Answer 22

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

Question 23

third layer muscles

Answer 23

• flexor hallucis brevis
• adductor hallucis
• flexor digiti minimi brevis

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–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 1st digit; assists in maintaining transverse arch of foot

Question 32

Flexor digiti minimi brevis origin

Answer 32

Base of 5th metatarsal

Question 33

Flexor digiti minimi brevis insertion

Answer 33

Base of proximal phalanx of 5th 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 5th digit, thereby assisting with its flexion

Question 36

fourth layer muscles

Answer 36

- plantar interossei (three muscles) | - dorsal interossei (four muscles)

Question 37

Plantar interossei (three muscles) origin

Answer 37

Bases and medial sides of metatarsals 3–5

Question 38

Plantar interossei (three muscles) insertion

Answer 38

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

Question 39

Plantar interossei (three muscles) innervation

Answer 39

Lateral plantar nerve (S2, S3)

Question 40

Plantar interossei (three muscles) action

Answer 40

Adduct digits (3–5) and flex metatarsophalangeal joints

Question 41

Dorsal interossei (four muscles) origin

Answer 41

Adjacent sides of metatarsals 1–5

Question 42

Dorsal interossei (four muscles) insertion

Answer 42

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

Question 43

Dorsal interossei (four muscles) innervation

Answer 43

Lateral plantar nerve (S2, S3)

Question 44

Dorsal interossei (four muscles) action

Answer 44

Abduct digits (2–4) and flex metatarsophalangeal joints