Exam 3- Sacral Plexu Cont. Flashcards
The common fibular nerve is made up of fibers
L4-S2 and located more laterally
The common fibular nerve gives off _____ branch in the tight before separating from tibial nerve fibers
One, the Biceps femoris (short head)
Upon reaching the anterio-lateral aspect of the leg the tibial nerve gives off
An articular branch to the knee joint
The lateral aural cutaneous nerve supplies the skin
On the lateral aspect of the leg
The fibular communicating branch forms the
Sural nerve after combining with the medial sural cutaneous nerve
What two branches combine to make the sural nerve
Fibular communicating branch
Medial sural cutaneous nerve
The superficial fibular nerve travels inferior to the
Fibular is longus and the fibula down the dorsum of the foot
What two muscles does the superficial fibular nerve supply
Fibularis longus
Fibularis brevis
What does the superficial fibular nerve split into to supply the skin over the dorsum of the foot except for the first two toes
Medial dorsal cutaneous nerve
Intermediate dorsal cutaneous nerve
The deep fibular nerve supplies what muscles
Tibialis anterior, extensor digitorum longus, extensor digitorum brevis, extensor hallucis longus, extensor halluces brevis, fibularis tertius
What supplies the sensory aspect of the skin between the first two toes
Terminal branch of deep fibular nerve
What fibers make up the tibial nerve
L4-S3
What nerve is larger the tibial nerve or common fibular nerve
Tibial is larger
What muscles are supplied by the common fibular and tibial nerves while combined
Biceps femoris (long head)
Semitendinosus
Semimembranosus
Adductor Magnus
In the popliteal fossa the tibial nerve supples
Popliteus
Gastrocnemius (both heads)
Soleus
Plantaris
The popliteal branch of the tibial nerve travels inferior to
The interosseous nerve of the leg
What nerve carries sensory info from the tibial periosteum, ankle and tibiofibular joints
Interosseous nerve of the leg
What 3 muscles does the tibial nerve supply in the leg
Flexor digitiorum longus
Flexor hallucis longu
Tibialis posterior
The tibial nerve gives off branches to the leg via what branch
Medial calcaneal branches
What does the medial calcaneal branches supply
The skin over the medial heel
What is the passage of the tibial nerve in the foot?
Travels around the medial malleolus to the plantar surface of the foot and divides into two branches
What are the two branches of the tibial nerve given off in the foot
Medial plantar nerve
Lateral plantar nerve
What muscles does the medial plantar nerve supply
Abductor hallucis
Flexor digitorum brevis
Flexor hallucis brevis
The medial plantar nerve then divides into the
Common plantar digital nerves
What does the common plantar digital nerves supply?
Motor supply- to lumbricals 1 and 2
Sensory supply- skin between toes by way of Proper Plantar Digital nerves
The lateral plantar nerve divides into a superficial and deep branch, which branch supplies the skin of the fifth digit
Superficial branch
The deep branch of the lateral plantar nerve provides motor to
Adductor hallucis, flexor digiti minimi brevis, abductor digiti minimi, quadratus plantae, lateral lumbricals, interossei muscles
What forms the coccygeal plexus
Anterior rami S4,S5 and Co1
The coccygeal plexus gives rise to
The anococcygeal nerves that carry sensory info from the skin adjacent to the coccyx and anus
