Cranial Nerve Pathways Osmosis

Cranial Nerve Pathways Osmosis Humans have twelve cranial nerves, each of which provides motor, sensory, or sympathetic innervation to a specific region of the head, face, and some visceral organs. some of the most important functions that cranial nerves control include vision, hearing and balance, facial sensation, facial movement, swallowing, and vomiting. cranial nerve. Humans have twelve cranial nerves, each of which provides motor, sensory, or sympathetic innervation to a specific region of the head, face, and some visceral organs. some of the most important functions that cranial nerves control include vision, hearing and balance, facial sensation, facial movement, swallowing, and vomiting.

Cranial Nerve Pathways Osmosis The cranial nerves are numbered i through xii, starting with the nerve closest to the brainstem. the olfactory nerve (i) is unique in that it doesn't supply any muscles or skin; it's responsible for smell perception. the remaining 11 cranial nerves supply various muscles and skin in the head, as well as some mucous membranes and glands. The cranial nerves provide afferent and efferent innervation principally to the head and neck structures. unlike spinal nerves, whose roots are neural fibers from the spinal grey matter, cranial nerves are composed of the neural processes associated with distinct brainstem nuclei and cortical structures. unlike the spinal nerves, cranial nerve nuclei are functionally organized into distinct. The cranial nerves are a set of 12 paired nerves that arise directly from the brain. the first two (olfactory and optic) arise from the cerebrum, whereas the remaining ten emerge from the brain stem. the names of the cranial nerves relate to their function and are numerically identified in roman numerals (i xii). After an introductory section surveying cranial nerve organization and tricky basics such as ganglia,nuclei and brain stem pathways, the nerves are considered in functional groups: (1) for chewing and facial sensation; (2) for pharynx and larynx, swal lowing and phonation; (3) autonomic components, taste and smell; (4) vision and eye movements.