ENVS 2210 Chapter Notes -Arthropod Eye, Aqueous Humour, Trichromacy
17 Apr 2013
School
Department
Course
Professor
Document Summary
Honeybees brain 850 000 cells, gets info from sensory array. Five eyes have photoreceptive tasks, the ocelli are little more than light metres. Compound eyes need bright light to gather info on images: colour, colour patterns, sizes, shapes, symmetries, edges, and movements. Compound eyes have tiny facets of compound that can receive three wavelengths: ultraviolet, blue, green. Smell and taste = chemical sense: most tasting done in mouthparts but antenna can taste as well as smell. Several generic types respond to types of stimuli: chemicals, touch, heat, humidity, carbon dioxide, vibration: senses of touch and vibration mediated by mechanoreceptors. Proprioception: providing info to central nervous system about relative body parts. Bees sensitive to magnetism and electricity, but we don"t know how. Light sensed in diff ways: presence )above certain threshold) or absence (below that threshold, discrim. Of wavelengths, repped by colour vision: disc.
