BIO 212 Lecture Notes - Lecture 15: Solitary Nucleus, Ciliary Body, Cilium
11 Jan 2018
School
Department
Course
Professor
Document Summary
An introduction to the special senses: 5 special senses, olfaction, gustation, vision, equilibrium, hearing. Smell (olfaction: olfactory organs, provide sense of smell, located in nasal cavity on either side of nasal septum, made up of 2 layers, olfactory epithelium, contains, olfactory receptors, highly modified neurons, olfactory reception. Accessory structures of the eye: accessory structures of the eye, provide protection, lubrication, and support. Contraction of these muscles enlarges the pupil: decreased light intensity/ increased sympathetic stimulation, the pupillary constrictor muscles from a series of concentric circles around the pupil. When these sphincter muscles contract, the diameter of the pupil decreases. Myopic people see distant objects as blurry and out of focus. The ciliary muscle must contract to focus even a distant object on the retina. And at close range the lens cannot provide enough refraction to focus an image on the retina.
