Anatomy and Cell Biology 3319 Lecture 14: Cranial Nerves

• School: Western University
• Department: Anatomy and Cell Biology
• Course: Anatomy and Cell Biology 3319
• Professor: Michele Barbeau

Document Summary

Cranial nerves overview: 12 pairs of cranial nerves, emerge off the ventral surface of the brain, number 1-12 from rostral to caudal (roman numerals i-xii) Crani: all innervate the head and neck (except. Vagus nerve: 2 emerge from forebrain, 10 emerge from brainstem. Origin/pathway: olfactory receptor cells olfactory bulb olfactory tract primary olfactory cortex. Info through the nose: olfactory receptor cells send filaments through to the olfactory bulb, electrical impulse back through olfactory cells and then synapse at the olfactory bulb, from then on from tract to the cortex. Origin/ pathway: retina optic nerve optic chiasm optic tracts lgn . Primary visual cortex: light comes into the eye and hits the retina, the retina is actually divided in half: nasal and temporal half. Left and right visual field: point where they overlap is the binocular visual field. Left visual field goes to the right eye. Right visual field goes to the left eye.