KINESIOL 1Y03 Lecture Notes - Lecture 12: Optic Nerve, Mastication, Diencephalon
3 Sep 2018
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Nerves that come from the brain instead of the spinal cord. Cell bodies of the neurons are in the brain (cranial) One pair from the spinal cord (xi) Oh once one takes the anatomy final very good vacations are heavenly. Some say marry money, but my brother says big brains matter more. B = both motor and sensory: olfactory nerve. Special receptors in the nasal cavity detect chemicals in the air and create an electrical signal. Signal - olfactory bulb - synapse with neurons - temporal nerve via olfactory tract: optic nerve. Collecting info from specialized receptors found in the retina. Light - electrical signals - optic nerve (ii) - optic chiasm (where the 2 nerves connect) - Optic tract - occipital lobe: oculomotor nerve. Functions: somatic motor (movements of eyeball and upper eyelid) and parasympathetic motor (smooth muscle; pupil constriction: trochlear nerve. Function: movement of eyeball; uses 1 muscle: trigeminal nerve. Function: movement of eyeball: facial nerve.
