LAWS101 Study Guide - Euglena, Histology, Choroid

• School: University of Otago
• Department: Law
• Course: LAWS101
• Professor: Cristine De Clercy

Document Summary

February 6, 2013 this is prof"s last lecture for the course; prof. garside will lecture after reading week lecture will only take 45-60 minutes then prof will work through series of multiple choice questions. Photoreception photoreception is our ability to detect visible light (about 350-750 nm wavelength) visible band attenuates very little in water. [see graph on slide] this supports the idea that animals evolved in water individual photoreceptors are condensed into the retina and can detect incoming light visual pigments are located on photoreceptors two major types of photoreceptors: ciliary photoreceptors. 2. have single, highly folded cilium rhabdomeric photoreceptors apical surface is covered with multiple outfoldings called microvillar projections photopigments are molecules that absorb energy from photos photoreceptors are packed in very tightly in the back layer of the retina. When retinal protein absorbs light, this causes change in retinal retinal dissociates from the opsin. Photopigments photopigment has 2 portions: chromophore derivative of vitamin a contains c-c double bonds.