Foot

Question 1

What muscles are present in the foot that have no homologues in the hand? On what side of the foot are they located?

Answer 1

extensor digitorum brevis
extensor hallucis brevis
Both on the dorsum of the foot!

Question 2

What is the function of the quadratus plantae muscle?

Answer 2

Coactivates with flexor digitorum longus to change the angle of pull

Question 3

How many layers of muscle are in the plantar foot?

Answer 3

4 layers

Question 4

How many muscles are in each of the 4 layers of the plantar foot?

Answer 4

3 2 3 2

Question 5

What are the muscles of the most superficial layer of muscles of the plantar foot?

Answer 5

1. abductor hallucis
2. flexor digitorum brevis
3. abductor digiti minimi

Question 6

What are the muscles of the second layer of muscles of the plantar foot?

Answer 6

1. quadratus plantae

2. lumbrical muscles

Question 7

What are the muscles of the third layer of muscles of the plantar foot?

Answer 7

1. flexor hallucis brevis
2. adductor hallucis
3. flexor digiti minimi brevis

Question 8

What are the muscles of the fourth layer of muscles of the plantar foot?

Answer 8

1. plantar interossei muscles

2. dorsal interossei muscles

Question 9

What is the axis of the foot?

Answer 9

the second toe (in hand it was middle finger - different)

Question 10

What are the 2 motor nerves of the foot?

Answer 10

medial plantar nerve

lateral plantar nerve

Question 11

What muscles are innervated by the medial plantar nerve? (4)

Answer 11

1. flexor digitorum brevis
2. abductor hallucis
3. 1st lumbrical
4. flexor hallucis brevis

Question 12

What muscles are innervated by the lateral plantar nerve?

Answer 12

ALL of the other muscles not innervated by the medial plantar nerve!

Question 13

What artery does the anterior tibial artery become as it passes the ankle?

Answer 13

dorsalis pedis artery

Question 14

The lumbrical muscles all originate on the ____ side of the tendon. (medial, lateral)

Answer 14

medial

Question 15

What does the deep fibular nerve branch into?

Answer 15

medial branch, lateral branch (on dorsum of foot)

Question 16

What nerve runs alongside the anterior tibial artery into the ankle?

Answer 16

deep fibular nerve

Question 17

What are the first branchings of the dorsalis pedis artery?

Answer 17

lateral tarsal artery, medial tarsal artery; then arcuate artery

Question 18

The ______ muscles are unipennate and the ______ muscles are bipennate.

Answer 18

The plantar interossei muscles are unipennate and the dorsal interossei muscles are bipennate.

Question 19

The medial side of the sole of the foot is cutaneously innervated by the __________ nerve.

Answer 19

medial plantar nerve

Question 20

The lateral side of the sole of the foot is cutaneously innervated by the _________ nerve.

Answer 20

lateral plantar nerve

Question 21

The medial side of the foot is cutaneously innervated by the _______ nerve.

Answer 21

saphenous nerve

Question 22

The lateral side of the foot is cutaneously innervated by the _______ nerve.

Answer 22

sural nerve

Question 23

The tibialis posterior tendon inserts on what bones?

Answer 23

2, 3, 4 metatarsals
cuboid
navicular
all 3 cuneiforms