CAS BI 108 Study Guide - Final Guide: G Protein–Coupled Receptor, Oval Window, Tectorial Membrane
19 Jul 2016
School
Department
Course
Professor
Document Summary
Example to know: female moth releases pheromone from abdominal gland and male moth detects pheromone in antennae (have chemoreceptor hairs) Neurons in glomerulus receive input only from receptor cells expressing same receptor gene. A distinct stimulus will activate distinct population of glomeruli. 5 different tastes buds: salt, sweet, sour, bitter, umami. Stereocilia tapered, some long and some short. Short long (open = depolarized) potassium enters cell. Membrane depolarization opens voltage-gated calcium channels, causing neurotransmitter release. In semicircular duct a: 3 semicircular canals at right angles to each other so detect 3d movements, stereocilia inside, fluid pushes and makes stereocilia bend, otoliths a. b. Ear stones - granules of calcium carbonate on top surface of gelatinous substance. Sound moves tympanic membrane, transfers pressure waves to move ossicles in middle ear which couple the movement of tympanic membrane with oval window. Need to build up pressure when push in on oval window and that pressure pushes on round window to release pressure.
