ZOO 2090 Lecture Notes - Lecture 16: Cochlea, Angular Acceleration, Golgi Tendon Organ
13 Sep 2017
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Document Summary
The sense organs perceive and integrate sensation and initiate action. Taste (gustatory) organs detects similar molecules as the olfactory, general structure similar to olfactory organ differ in: endodermal origin. Less sensitive: re(cid:272)eptor (cid:272)ells aggregated i(cid:374)to taste (cid:271)uds, they do(cid:374)"t ha(cid:448)e axons, but receive afferent fibres from the cns, taste buds are exposed, worn and replaced, about taste buds: The distribution of the buds are variable across major groups: Iris controls entry of light: signal from photoreceptor neurons is processed within the retina before it reaches ganglion cells; the output neurons of the eyes. Index of refraction of water is the same as inside eye and cornea, but index of refraction of lens is above that of water. Focusing (cid:198) change in lens position by contraction of the retractor lentis muscle: cornea is flat, not involved in focusing light. Index of refraction of air differs from inside they eye and cornea.
