Anatomy

CRANIAL NERVES

Nerve	Name^a	Function	Type
I	Olfactory	Smell	Sensory
II	Optic	Vision	Sensory
III	Oculomotor	Eye muscles, accommodation	Motor
IV	Trochlear	One eye muscle	Motor
V	Trigeminal	Sensation to face/oral, muscles of mastication	Both
VI	Abducens	One eye muscle	Motor
VII	Facial	Taste, muscles of facial expression, secretions of lacrimal, mucosal, and some saliva glands	Both
VIII	Vestibulocochlear (or Auditory)	Hearing, sense of equilibrium	Sensory
IX	Glossopharyngeal	Sensation from pharynx, taste, one pharyngeal muscle, secretion of one saliva gland	Both
X	Vagus	Sensation from pharynx and larynx, taste, muscles of palate, pharynx, larynx, and one tongue muscle, parasympathetic to thorax and upper abdomen	Both
XI	Accessory	Two neck muscles	Motor
XII	Hypoglossal	Tongue muscles	Motor
^aMnemonic for names of cranial nerves: On Old Olympus Towering Top A Fin And German Viewed A Hop.

BLOOD SUPPLY TO THE TALUS

Posterior tubercle: The medial calcaneal artery anastomoses with a branch from the peroneal artery to supply this area.

Body: Supplied by the artery of the sinus tarsi and the artery of the tarsal canal; both anastomose with each other as well as with the deltoid branches

Head/neck: Supplied by direct branches off the dorsalis pedis artery or anterior tibial artery and the anastomoses that the dorsalis pedis makes with the deltoid branches and the artery of the sinus tarsi

NERVES TO THE LOWER EXTREMITY

Infrapatellar branch of the saphenous nerve
Saphenous nerve (L3, L4)
Tibial nerve
Lateral calcaneal nerve
Medial calcaneal nerve
Lateral branch of deep peroneal nerve
Medial branch of deep peroneal nerve
1st dorsal digital proper nerve
2nd to 10th dorsal digital proper nerve
Lateral dorsal cutaneous nerve
Medial dorsal cutaneous nerve
Intermediate dorsal cutaneous nerve
Deep peroneal nerve
Sural nerve
Superficial peroneal nerve
Lateral sural cutaneous nerve
Peroneal communicating branch
Common peroneal nerve
Medial sural cutaneous nerve
1st to 4th common dorsal digital nerve
Sciatic nerve (L4-S3)
1st to 10th proper plantar digital nerve
Medial plantar nerve
Infracalcaneal nerve (nerve to the abductor digiti minimi), a.k.a. Baxter’s nerve
Lateral plantar nerve
Superficial branch of lateral plantar nerve
Deep branch of lateral plantar nerve
Communicating branch
1st to 4th common plantar digital nerve