ANP 1106 Study Guide - Final Guide: Cochlear Nucleus, Raphe Nuclei, Procedural Memory

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Joanne Savory

Document Summary

Smell & taste/ lecture 4/ pages 565- 570 in textbook. Smell: location and structure of olfactory receptors, olfactory epithelium in roof of mouth, contains millions of pin- shaped receptor cells called olfactory sensory neurons, columnar supporting cells surround and cushion neurons. Short olfactory stem cells lie at base of epithelium: olfactory cilia on the olfactory sensory neurons increase receptive surface area. Lie flat on nasal epithelium: filaments of the olfactory nerve (cranial nerve i) formed from fascicles of nonmyelinated axons. Specificity of olfactory receptors: humans can smell 10,000+ odors and 400 smell genes active in nose; neurons extremely sensitive! Physiology of smell: activation of olfactory sensory neurons: Dissolved odorants bind to receptor proteins in olfactory cilium membranes. Opens cation channels and generates receptor potential: smell transduction process (5 steps): Taste: location and structure of taste buds, sensory organs for taste located in tongue called taste buds.