MEDRADSC 3I03 Lecture Notes - Lecture 12: Foramen Rotundum, Mastication, Medulla Oblongata
4 Jan 2017
School
Department
Course
Professor
Document Summary
Gray matter: is composed of mainly nerve cell bodies and is concentrated in the cerebral cortex, the nuclei and the basal ganglia. White matter: is composed of axons, which form tracts connecting parts of the brain with each other and with the spinal cord. Nerve: a fiber made of linked neurons that transmit electrical and chemical signals between the central nervous system and the body tissues. afferent nerves-sensory impulses, and efferent nerves- motor impulses. Neurosensory cells: located in the superior nasal concha covering and the upper part of the nasal septum. 18-20 small nerve bundles pass through the olfactory foramina in the cribriform plate. Travel along the inferior surface of the frontal then travel to the limbic system via the hippocampal gyrus. The conscious perception of olfactory stimulation comes from the temporal lobe. Travel through optic canal to middle cranial fossa. Meet and cross over at optic chiasm (infundibulum)
