L11: Foot

Question 1

dorsal foot - blood supply

Answer 1

ant tibial art
arcuate art
deep plantar art

Question 2

anterior tibial artery

Answer 2

from dorsalis pedis artery

Question 3

arcuate artery

Answer 3

termination of arcuate art

gives off:
dorsal metatarsals to dorsal digitalis

Question 4

dorsal foot - muscles

Answer 4

ext digit brevis
extensor hallucis brevis
dorsal interossei

Question 5

dorsal interossei

Answer 5

abductors

–use 2nd toe as reference

Question 6

dorsal foot - nerve supply

Answer 6

superficial peroneal n
deep peroneal n
sural n

Question 7

superficial peroneal n

Answer 7

gives rise to medial and intermediate dorsal cutaneous nerves

Question 8

deep peroneal n

Answer 8

lateral branch is motor to intrinsic muscles on dorsum

medial branch - cutaneous

Question 9

sural n

Answer 9

gives off lateral dorsal cutaneous n

Question 10

peroneal retinacula (2)

Answer 10

sup peroneal
inf peroneal

tendons of both peroneus longus and brevis pass thru both of the retinacula

Question 11

sole of foot - blood supply

Answer 11

post tibial art
–med and lat plantar art

perforating arteries

Question 12

sole - nerve supply cutaneous

Answer 12

tibial n

• -med calcaneal
• -med plantar
• -lat plantar

saphenous n
sural n

Question 13

sole - motor nerve supply

Answer 13

tibial n

via lat and med plantar nerves

Question 14

superficial layer of the sole

Answer 14

skin

plantar aponeurosis

Question 15

first muscle layer of the sole

Answer 15

abductor hallucis
flexor digit brevis
abd digiti minimi

Question 16

tendons in first muscle layer of the sole

Answer 16

flex digit longus

flex hallucis longus

Question 17

second muscle layer of the sole

Answer 17

quadratus plantae

lumbricals

Question 18

third muscle layer of the sole

Answer 18

flexor hallucis longus tendon
abd hallucis
flex digiti minimi brevis

Question 19

fourth muscle layer of the sole

Answer 19

peroneus longus tendon
tibialis post tendon
interossei
--3 plantar adductors
--4 dorsal abductors

Question 20

the flexor hallucis longus tendon passes between ?

Answer 20

sesamoid bones in tendons of flexor hallucis brevis

Question 21

abductor hallucis - action and innervation

Answer 21

abd 1st toe at MP jt
help flex MP jt

medial plantar n

Question 22

flexor digitorum brevis - action and innervation

Answer 22

flex PIP jt toes 2-5

medial plantar n

Question 23

abductor digiti minimi - action and innervation

Answer 23

abduct 5th toe at MP jt

lateral plantar n

Question 24

quadratus plantae - action and innervation

Answer 24

help flex DIP jts of toes 2-5

lat plantar n

Question 25

lumbricals - action

Answer 25

flex MP jts
extend PIP and DIP jts

digits 2-5

Question 26

lumbricals - innervation

Answer 26

lumbrical 2-4
lat plantar n

lumbrical 1
med plantar n

Question 27

flexor hallucis brevis - action and innervation

Answer 27

flex prox phalanx of 1st toe

med plantar n

Question 28

adductor hallucis - action and innervation

Answer 28

adduct 1st toe at MP jt

lat plantar n

Question 29

flexor digiti minimi brevis - action and innervation

Answer 29

flex PIP jt of 5th toe

lat plantar n

Question 30

dorsal interossei (4) - action and innervation

Answer 30

abduct toes 2-4
flex metatarsal-phalangeal jts

lat plantar n

Question 31

plantar interossei (3) - action and innervation

Answer 31

adduct toes 3-5 at MP jt
–towards 2nd toe
flex MP jt
ext PIP and DIP jts of toes 3-5

lateral plantar n