PHS 3341 Chapter Notes - Chapter 5: Olfactory Mucosa, Olfactory Receptor, Olfactory Nerve
7 Dec 2016
School
Department
Course
Professor
Document Summary
Chemoreceptors for taste sensation are packaged in taste buds. A taste bud has about 50 long spindle-shaped taste receptor cells packaged with supporting cells in an arrangement like slices of an orange. Each taste bud has a small opening, the taste pore. Taste receptor cells are modified epithelial cells with man surface folds. Terminal endings of several cranial nerves synapse with taste buds in various regions of the mouth. Cortical gustatory area is a region in the parietal love. Caused by acids containing a free hydrogen ion. Secondary messenger pathway ultimately results in phosphorylation and blockage of k channels in the receptor membrane. Elicited by a more chemically diverse groups of tastants. Each receptor cell has this diverse family of bitter receptors. The first g protein in taste - gustducin - was identified in one of the bitter signaling pathways.
