Lab Manual NCs Flashcards
What muscles of the foot are innervated by the Medial Plantar N. and what are their actions?
- Abductor Hallucis (Abduction of Great Toe)
- Flexor Digitorum Brevis (Flexion of digits 2-5)
- 1st Lumbrical (MP flex., PIP/DIP ext.)
- Flexor Hallucis Brevis (Flexion of Great Toe)
What muscles are innervated by the Lateral Plantar N. or its subdivisions and what are their actions?
- Abductor Digiti Minimi (Abduction of Small Toe)
- Quadratus Plantae (tension of FDL)
- Lumbricals 2-4
- Adductor Hallucis (Great Toe Adduction)
- Flexor Digiti Minimi Brevis (Small Toe Flex)
- Plantar Interiossei (PAD) (Add. digits 3-5)
- Dorsal Interossei (DAB) (Abd. digits 2-4)
What muscles are innervated by the Deep branch of the lateral plantar N?
- Lumbricals 2-4
- Adductor Hallucis
- Plantar Interossei
- Dorsal Interossei
What muscles are innervated by the Superficial branch of the lateral plantar N?
- Flexor Digiti Minimi Brevis
What nerve gives rise to the lateral sural cutaneous n?
fibular
What nerve gives rise to the medial sural cutaneous n?
tibial
What passes dorsolateral to the popliteal vein in the popliteal fossa?
Tibial N.
What compartment of the leg is the tibial N found in?
Posterior
What structure follows the course of the biceps femoris structure?
Fibular N.
At what part of the fibula can the common fibular N be found?
At the neck
What artery pierces the interosseous membrane just deep to the articulation of the tibia and fibula?
Anterior tibial A.
While passing through/under _________, the posterior tibial a. splits into _________ and ___________?
What else passes thought this muscle?
Abductor hallucis
Lateral plantar a.
Medial Plantar a.
Tibial n.
T or F: the fibularis longus tendon runs under all four layers of leg muscle.
True
What provides most of the blood to the lateral compartment?
Fibular artery
What extends between the medial malleolus and calcaneous?
flexor retinaculum
What structure courses transversely (lateral to medial) across the deepest plane of the foot?
Fibularis Longus
What is the blood supply to the lateral compartment?
fibular artery
What structure runs with the small saphenous vein?
Sural cutaneous nerve
What vein runs posterior to the lateral malleolus?
small saphenous
What are the actions of muscles in the posterior compartment?
Plantar flexion of the foot
Flexion of the toes
Inversion of the Foot
What is the orientation of plantaris relative to the gastrocnemius muscle?
Deep to the lateral head
Explain how the popliteal vessels and tibial nerve enter the posterior compartment?
They pass deep to the fibrous arch of the soleus
What can be found deep in the floor of the popliteal fossa, deep to the popliteal artery and heads of the gastrocnemius?
Popliteus
What tendon is separated from the lateral meniscus by poplitieus?
lateral collateral ligament
What muscle covers the lateral fibula?
flexor hallicus longus
What muscle covers the tibia?
Flexor digitorum longus
What muscle goes between flexor hallucis longus and flexor digitorum longus?
Tibialis posterior
What nerve has a cutaneous branch that goes to the heel?
tibial n.
Where does the tibial nerve split into medial and lateral plantar nerves?
in the origin of abductor hallucis
What does the popliteal artery divide into and where?
anterior and posterior tibial arteries at the inferior border of popliteus
What courses with the tibial n. through the posterior compartment of the leg?
posterior tibial a and v
The posterior tibial artery passes deep to what muscle group?
superficial abductor hallucis, Flexor digitorum brevis, abductor digiti minimi
Note: this is where most of the nerve and vasculature is in the foot
What nerve course through abductor hallucis and flexor digitorum brevis?
medial plantar n.
What gives rise to the medial plantar artery and what does the medial plantar artery course with?
posterior tibial a.
courses with medial plantar n. (a. = medial)
What happens to the lateral plantar n. just lateral to quadratus plantae?
it developes the superficial and deep branches
What gives rise to the plantar arterial arch?
lateral plantar artery
what muscles are in the second layer of the foot?
quadratus plantae, lumbricals, tendons of the flexor digitorum longus, flexor hallucis longus
What muscle is deep to the lateral plantar nerves and vessels?
quadratus plantae
The tendons of what muscle contain the sesamoid bones?
Flexor hallucis brevis
What muscle is located deep to abductor digiti minimi?
flexor digiti minimi brevis
The deep palmar arch is sandwhiched between what muscles?
Quadraus plantae and adductor hallicus (plantar side)
Interossei (dorsal side)
What does the deep plantar arch join medially?
dorsalis pedis
