Plantar Aspect of foot - 1st layer of intrinsic muscles

Question 1

What are the 3 muscles in the 1st layer of intrinsic muscles on the plantar side of the foot?

Answer 1

Flexor Digitorum Brevis
Abductor Hallucis Brevis
Abductor Digiti Minimi

Question 2

What is the origin of Flexor Digitorum Brevis?

Answer 2

Medial process of CALCANEAL TUBEROSITY.

and Plantar aponeurosis.

Question 3

What is the insertion of Flexor Digitorum Brevis?

Answer 3

Sides of the plantar surface of MIDDLE phalanges of toes 2 to 5.

Question 4

What is the innervation of Flexor Digitorum Brevis?

Answer 4

Medial Plantar Nerve

S1, S2, S3

Question 5

What is the function of Flexor Digitorum Brevis?

Answer 5

Flex lateral 4 toes at proximal inter-phalangeal joint.

Question 6

What is the origin of Abductor Hallucis?

Answer 6

Medial Process of the CALCANEAL TUBEROSITY.

Question 7

What is the insertion of Abductor Hallucis?

Answer 7

Medial side of base of PROXIMAL phalanx of GREAT TOE

Question 8

What is the innervation of Abductor Hallucis?

Answer 8

Medial Plantar Nerve
(S1, S2, S3)

*branch from tibial

Question 9

What is the action of abductor hallucis?

Answer 9

Abducts and flexes great toe at metatarsophalangeal joint.

Question 10

What is the origin of abductor digiti minimi?

Answer 10

Lateral and Medial process of the CALCANEAL TUBEROSITY.

AND

The band of connective tissue that connects the calcaneus to the base of metatarsal 5.

Question 11

What is the insertion of abductor digiti minimi?

Answer 11

Lateral side of base of proximal phalanx of little toe

Question 12

What is the innervation of abductor digiti minimi?

Answer 12

Lateral Plantar Nerve
(S1, S2, S3)

*branch of tibial

Question 13

What is the action of abductor digiti minimi?

Answer 13

Abducts little toe at the metatarsophalangeal joint.