Ophthalmic Artery
Origin of Ophthalmic Artery It is a branch of internal carotid artery. Origin: It arises when the internal carotid artery emerges through the roof of the cavernous sinus, medial to anterior clinoidRead More…
Ophthalmic nerve
Course of Ophthalmic Nerve Ophthalmic nerve is the 1st division of trigeminal nerve. It is a pure sensory nerve. It commences from the anterior aspect of trigeminal ganglion. It passes along the lateral wallRead More…
Hypoglossal Nerve
Introduction Hypoglossal nerve is the 12th cranial nerve. It is purely motor nerve. Origin: Its nucleus is located in the medulla in the lower part of the floor of the fourth ventricle.Read More…
Accessory Nerve
Introduction Accessory nerve is the 11th cranial nerve. It has two parts: Spinal and cranial. Origin: Spinal part aries from the spinal nucleus of accessory nerve located in upper 4-5 cervical segments ofRead More…
Vagus Nerve
Introduction Vagus nerve is the 10th cranial nerve. It is a mixed (sensory and motor) nerve. Origin: Its nuclei viz. nucleus ambiguus, dorsal motor nucleus of vagus and nucleus of tractus solitariousRead More…
Glossopharyngeal Nerve
Introduction Glossopharyngeal nerve is the ninth cranial nerve. It is a mixed (sensory and motor) nerve. Origin: Its nuclei viz. nucleus ambiguus, inferior salivatory nucleus and nucleus of tractus solitarius are locatedRead More…
Facial Nerve
Describe the origin and course of facial nerve. Facial nerve is the seventh cranial nerve. It is a mixed (sensory and motor) nerve. Origin:Its nuclei lie in the lower part of theRead More…
Trigeminal Nerve
What is the origin and subdivisions of trigeminal nerve? It is mixed (sensory and motor) nerve. It emerges from the ventral surface of pons at its junction with the middle cerebellar peduncle.Read More…
Abducent Nerve
Describe the origin and course of aducent nerve. Abducent nerve (so named because it abducts the eye) is the 6th cranial nerve. It is purely motor nerve. Origin: Its nucleus is locatedRead More…
Trochlear Nerve
What is the origin and course of Ttochlear nerve? Trochlear nerve Is the IVth cranial nerve. it is the smallest cranial nerve. Is purely motor nerve. Origin: Its nucleus is located in the midbrainRead More…