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QUESTION 1 -- A ray of light entering the eye will encounter the following structures in which order? conjunctiva - cornea - lens aqueous humor vitreous body - retina vitreous body retina - choroids aqueous humor lens conjunctiva aqueous humor vitreous body - lens - conjunctiva → choroids retina conjunctiva aqueous humor-lens vitreous body retina aqueous humor conjunctiva - lens vitreous body-retina - choroid cornea cornea - cornea cornea - QUESTION 2 An area of the retina that contains only cones and is the site of sharpest vision is the: inner segment. tapetum lucidum. optic disc. fovea outer segment. OUESTION 3

Answer 1

vibrous body Answer and Explanation. o conjuctiva. comea >> aqueous Humor - lens-> - Retina. Explanation the confuctive covers outer part of ever and protects it the comea, sansparent part cover front of eve it refracts and bends the light a aqueous Humor watery fluid present benoeen comed and lens, protects eve and nourishes comea and lens.. lens is the major refracting part, biconcave structure pocuses light into Rating. vibrous humor is fuid maintening pressure and nourishment. Retina, where image formed. forea Espluation : forea censalis is the central pit small part couich is composed a densly packed comes to the eve located in center of macula lutea queting . Here the vision is sharpest, because the ganglion and Bipolar kaper of reting spread apart at the forea to give right direct paroap for the sharpest visioni D! Hearing vestibulary is component vestibulocochlear nerve it is 8th cranial nerve. The vestibular part is responsible for equilibrium and balance while the cochleen part is responsi ble for Hearing It pansmit information of sound and balance prom inney the brain. caur to u shrink, and do the number of taste bud decreases. ouring HOS and 50s of life time the taste bud begins to not function well At tos it decreases to 1/6th of now at 20s age. the taste sensation is decreased because of depapilisation and sexperkeratinisation of epithelium Also due to deneration of Mesues gradualle

5 Bind to receptor in olactos dendrites Explanation - The olfaction begins when the diffusible molecule enters nasal cavity and activates receptor olfactor epithelium. This activation sets complen chain sequence of biochemical reaction and gives information to of factory center in brain. tornar bu Excess Mucus block the bidorant molecule to bind with receptors. when the odosants enters the nose it binds to specific a receptor present over here . en sinus infection. the ability to drain mucus decreases and it block the attachement of Oelosant with receptors, impouding Smells 2