Intrinsic Foot muscles

Question 1

What are the dorsal aspects of intrinsic muscles

Answer 1

Extensor digitorum Brevis
Extensor Hallucis brevis

Question 2

What do dorsal aspects of intrinsic muscles do

Answer 2

assist some of the extrinsic muscles in their actions.

Question 3

What nerve runs through the dorsal aspects of intrinsic muscles

Answer 3

deep Fibular nerve

Question 4

Where is extensor digitorum brevis

Answer 4

deep to the tendos of the extensor digitorum longus (metatarsal 2, 3, 4)

Question 5

Where is extensor hallucis brevis

Answer 5

medial to extensor digitorum longus and lateral to extensor hallucis longus

Question 6

How many in the Plantar aspect of Intrinsic muscles (sole of foot)

Answer 6

10

Question 7

How many layers in plantar layer

Answer 7

4

Question 8

What do the plantar layer muscles do

Answer 8

Stabilize the arches of the foot and individually control the movements of the digits

Question 9

Which nerve innervates the plantar layer

Answer 9

Tibial nerve

Question 10

How many name the muscles in the first layer (most superficial)

Answer 10

3
Abductor hallucis
Abductor digiti Minimi pedis
Flexor Digorum Brevis

Question 11

Describe abductor hallucis

Answer 11

located on medial side of sole, where it contributes to small soft tissue bulge

Question 12

Describe abductor digiti minimi pedis

Answer 12

lateral side of foot. small soft tissue bulge on lateral side

Question 13

Describe flexor digtorum brevis

Answer 13

center of sole, between two abductors

Question 14

How many and Name second layer of plantar miscles

Answer 14

2
Quadratus plantae muscle
Lumbricals

Question 15

Describe quadratus plantae muscle

Answer 15

proximal to flexor digitorum longus tendos. accessory muscle to toe flexion

Question 16

Describe lumbricals

Answer 16

there are 4 and they flex and adduct the lateral four toes at the metatarsophlangeal joints and extend them at the interphalangeal joints. Contribute to balance of foot while walking

Question 17

How many and name third layer of plantar muscles

Answer 17

3
Flexor Hallucis brevis
Flexor digiti minimi pedis
Adductor hallucis

Question 18

Which muscles are associated with big toe?

Answer 18

Flexor hallucis brevis
Adductor hallucis

Question 19

Which toe does Flexor digiti minimi pedis move

Answer 19

little toe

Question 20

Describe Flexor hallucis brevis

Answer 20

located on medial side of foot. splits into two distal tendons that attach on proximal phalanx and sesamoids of big toe

Question 21

Descrbe flexor digiti minimi pedis

Answer 21

on lateral side of foot

Question 22

Describe adductor hallucis

Answer 22

lateral to flexor hallucis brevis. Consists of an oblique and transverse head

Question 23

What is in the 4th layer of plantar

Answer 23

2 muscles
plantar interossei
dorsal iterossie

Question 24

How many plantar interossei and describe

Answer 24

three which originate on medial aspect of metatarsals 3-5. They adduct the toes PAD-plantar adduct

Question 25

How many dorsal interossi

Answer 25

4 abduct metatarophalangeal kjoints of 3rd and 4th toes. DAB-plantar abduct. Also a pair attachced to both sides of 2nd toe;

Question 26

Which toe is midline of foot

Answer 26

2nd

Question 27

What kind of morphology does plantar interossi have?

Answer 27

unipennate

Question 28

what kind of morphology does dorsal interossei have

Answer 28

bipennate

Question 29

What helps keep the extrinsic muscles of the ankle in place?

Answer 29

extensor retinaculum, flexor retinaculum and fibula retinacukum

Question 30

What does the extensor retinaculum hold?

Answer 30

anterior compartment muscles

Question 31

Where is the superior extensor retinaculum

Answer 31

runs anteriorly from fibula to tibia

Question 32

where is inferior extensor retinaculum

Answer 32

Y shaped and runs from calcaneus on lateral side of foot to medial malleolus (tibia0/ and from calcaneus to medial aspect of plantar aponeurosis

Question 33

Where is and what does the flexor retinaculum do

Answer 33

runs from medial malleolus to calcaneus. Holds TDH muscles

Question 34

Where is and what does the superior fibula retinaculum do

Answer 34

Superior runs from lateral malleolus to calcaneus

Question 35

Where is and what does the inferior fibula retinaculum do

Answer 35

Runs between two parts of calcaneus and holds fibularis muscles