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sensory organ cva
| Question | Answer |
|---|---|
| what do vertebrate receptor cells develop from | neural tube, neural crest, neurogenic placodes |
| what do vertebrate receptor cells connect to | nervous system |
| what are transducers | convert energy from environmental change into a nerve impulse |
| types of receptor cells | chemical receptors: olfactory and taste |
| what are cutaneous receptors | temperature, pain, touch, presssure |
| what are proprioceptors | balance, tension, rate/degree of contraction |
| lateral line, ear, electroreceptors | hair cells (vibrations gravity), ampullary organ cells (elec fields) |
| what is the lateral line | a system that contains electroreceptors |
| what are photoreceptors and thermoreceptors | rods and cones (p) pit organ cells (infared) |
| 4 types of chemoreceptor | internal chemoreceptors, free nerve endings in mucous membranes, olfactory receptors, gustatory receptors |
| what do internal chemoreceptors do | monitor internal environment (ph, co2, levels, o2 levels) |
| what do free nerve endings is mucous membranes do | detect noxious chemicals |
| what do olfactory cells do | detect odors |
| what is true about olfactory systems across vertibrates | it is similar |
| pathway of an olfactory system | vomeronasal organ/ smell organ, main olfactory epithelium, olfactory bulb, accessory olfactory bulb |
| choanae | pair of openings at the back of the nasal cavity all tetrapods |
| what are turbinate bones | large olfactory surface area, scroll, vascular, clean, moisten and warm inconming air, cool outgoing air, also have chemoreceptors for smell |
| vomeronasal organ | not in birds, lissamphibians, most turtles, crocodiles, cetaceans, sirenians |
| who has vomeronasal organ | bats, primates, humans, other mammals, snakes, lizards, have vestigial jacobson's organs |
| in who is vomeronasal organ developed | mammals, snakes, lizards |
| where is vomeronasal organ found | between palate and nasal cavities of most tetrapods |
| who have vomeronasal organs that are incompletely separated from main olfactory system | lissamphibians, tuataras, snakes, lizards |
| where do odors enter thru | nose/mouth |
| where do vomeronasal neurons terminate | accessory olfactory bulb |
| what is the function of vomeronasal organ in reptiles | sex recognition, courtship, following prey trails, hibernation activity |
| vomeronasal organ function in mammals | sex recognition, courtship mating, reproductive signaling |
| what are pheremones | produced by one member of a species that is detected by another |
Created by:
kavyasurav