Lab Manual NCs

Question 1

What muscles of the foot are innervated by the Medial Plantar N. and what are their actions?

Answer 1

1. Abductor Hallucis (Abduction of Great Toe)
2. Flexor Digitorum Brevis (Flexion of digits 2-5)
3. 1st Lumbrical (MP flex., PIP/DIP ext.)
4. Flexor Hallucis Brevis (Flexion of Great Toe)

Question 2

What muscles are innervated by the Lateral Plantar N. or its subdivisions and what are their actions?

Answer 2

1. Abductor Digiti Minimi (Abduction of Small Toe)
2. Quadratus Plantae (tension of FDL)
3. Lumbricals 2-4
4. Adductor Hallucis (Great Toe Adduction)
5. Flexor Digiti Minimi Brevis (Small Toe Flex)
6. Plantar Interiossei (PAD) (Add. digits 3-5)
7. Dorsal Interossei (DAB) (Abd. digits 2-4)

Question 3

What muscles are innervated by the Deep branch of the lateral plantar N?

Answer 3

1. Lumbricals 2-4
2. Adductor Hallucis
3. Plantar Interossei
4. Dorsal Interossei

Question 4

What muscles are innervated by the Superficial branch of the lateral plantar N?

Answer 4

1. Flexor Digiti Minimi Brevis

Question 5

What nerve gives rise to the lateral sural cutaneous n?

Answer 5

fibular

Question 6

What nerve gives rise to the medial sural cutaneous n?

Answer 6

tibial

Question 7

What passes dorsolateral to the popliteal vein in the popliteal fossa?

Answer 7

Tibial N.

Question 8

What compartment of the leg is the tibial N found in?

Answer 8

Posterior

Question 9

What structure follows the course of the biceps femoris structure?

Answer 9

Fibular N.

Question 10

At what part of the fibula can the common fibular N be found?

Answer 10

At the neck

Question 11

What artery pierces the interosseous membrane just deep to the articulation of the tibia and fibula?

Answer 11

Anterior tibial A.

Question 12

While passing through/under _________, the posterior tibial a. splits into _________ and ___________?

What else passes thought this muscle?

Answer 12

Abductor hallucis
Lateral plantar a.
Medial Plantar a.

Tibial n.

Question 13

T or F: the fibularis longus tendon runs under all four layers of leg muscle.

Answer 13

True

Question 14

What provides most of the blood to the lateral compartment?

Answer 14

Fibular artery

Question 15

What extends between the medial malleolus and calcaneous?

Answer 15

flexor retinaculum

Question 16

What structure courses transversely (lateral to medial) across the deepest plane of the foot?

Answer 16

Fibularis Longus

Question 17

What is the blood supply to the lateral compartment?

Answer 17

fibular artery

Question 18

What structure runs with the small saphenous vein?

Answer 18

Sural cutaneous nerve

Question 19

What vein runs posterior to the lateral malleolus?

Answer 19

small saphenous

Question 20

What are the actions of muscles in the posterior compartment?

Answer 20

Plantar flexion of the foot
Flexion of the toes
Inversion of the Foot

Question 21

What is the orientation of plantaris relative to the gastrocnemius muscle?

Answer 21

Deep to the lateral head

Question 22

Explain how the popliteal vessels and tibial nerve enter the posterior compartment?

Answer 22

They pass deep to the fibrous arch of the soleus

Question 23

What can be found deep in the floor of the popliteal fossa, deep to the popliteal artery and heads of the gastrocnemius?

Answer 23

Popliteus

Question 24

What tendon is separated from the lateral meniscus by poplitieus?

Answer 24

lateral collateral ligament

Question 25

What muscle covers the lateral fibula?

Answer 25

flexor hallicus longus

Question 26

What muscle covers the tibia?

Answer 26

Flexor digitorum longus

Question 27

What muscle goes between flexor hallucis longus and flexor digitorum longus?

Answer 27

Tibialis posterior

Question 28

What nerve has a cutaneous branch that goes to the heel?

Answer 28

tibial n.

Question 29

Where does the tibial nerve split into medial and lateral plantar nerves?

Answer 29

in the origin of abductor hallucis

Question 30

What does the popliteal artery divide into and where?

Answer 30

anterior and posterior tibial arteries at the inferior border of popliteus

Question 31

What courses with the tibial n. through the posterior compartment of the leg?

Answer 31

posterior tibial a and v

Question 32

The posterior tibial artery passes deep to what muscle group?

Answer 32

superficial abductor hallucis, Flexor digitorum brevis, abductor digiti minimi

Note: this is where most of the nerve and vasculature is in the foot

Question 33

What nerve course through abductor hallucis and flexor digitorum brevis?

Answer 33

medial plantar n.

Question 34

What gives rise to the medial plantar artery and what does the medial plantar artery course with?

Answer 34

posterior tibial a.

courses with medial plantar n. (a. = medial)

Question 35

What happens to the lateral plantar n. just lateral to quadratus plantae?

Answer 35

it developes the superficial and deep branches

Question 36

What gives rise to the plantar arterial arch?

Answer 36

lateral plantar artery

Question 37

what muscles are in the second layer of the foot?

Answer 37

quadratus plantae, lumbricals, tendons of the flexor digitorum longus, flexor hallucis longus

Question 38

What muscle is deep to the lateral plantar nerves and vessels?

Answer 38

quadratus plantae

Question 39

The tendons of what muscle contain the sesamoid bones?

Answer 39

Flexor hallucis brevis

Question 40

What muscle is located deep to abductor digiti minimi?

Answer 40

flexor digiti minimi brevis

Question 41

The deep palmar arch is sandwhiched between what muscles?

Answer 41

Quadraus plantae and adductor hallicus (plantar side)

Interossei (dorsal side)

Question 42

What does the deep plantar arch join medially?

Answer 42

dorsalis pedis