Superficial intrinsic muscles of the sole of foot

Question 1

Insertion of abductor hallucis?

Answer 1

1st toe (base of proximal phalanx via the medial sesamoid)

Question 2

Innervation of abductor hallucis and flexor digitorum brevis?

Answer 2

Medial plantar n.

Question 3

Action of abductor hallucis?

Answer 3

1st MTP joint: flexion and abduction of the 1st toe

Supports longitudinal arch

Question 4

Origin of flexor digitorum brevis and abductor digiti minimi?

Answer 4

Calcaneal tuberosity (medial tubercle), plantar aponeurosis

Question 5

Insertion of flexor digitorum brevis?

Answer 5

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

Question 6

Action of flexor digitorum brevis?

Answer 6

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

Supports the longitudinal arch

Question 7

Insertion of abductor digiti minimi?

Answer 7

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

Question 8

Innervation of abductor digiti minimi?

Answer 8

Lateral plantar n. (S1-S3)

Question 9

Action of abductor digiti minimi?

Answer 9

Flexes the MTP joint of the 5th toe
Abducts the 5th toe
Supports the longitudinal arch

Question 10

Origin of abductor hallucis?

Answer 10

Calcaneal tuberosity (medial process)