BIO 3303 Lecture Notes - Lecture 11: Hair Cell, Circulatory System, Lateral Line
8 Sep 2017
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Document Summary
Mechanoreceptors respond to mechanical forces: transduce mechanical stimuli such as pressure displacement vibration into electrical signals, many different types of mechanoreception, they are stretch sensitive ion channels. Diverse functions: regulate blood cell vol, blood pressure, touch, balance, vestibular, hearing. Types of mechanoreceptors: (these are touch and pressure) Enacs (epithelia sodium channels) and trp (transient receptor potential channels): both are stretch activated channels with two attatchment points at the extracellular matric and it is attatched again at the cytoskeleton. Enac channels epithelial sodium cannels involved in the transduction of chemical stimuli. Trp channels transient receptor potential channels chemotransduction. The carotid body has both chemoreceptors and baroreceptors in it. Baroreceptors are hyst free nerve endings that are in the wall of the artery. When it stretches it will send a message saying that the pressure is going up or down. Found in blood vessels parts of the hard and urinary stracts.
