5. List in correct order all the structures that light must pass through during

Question

5. List in correct order all the structures that light must pass through during vision beginning with light hitting the cormea and ending with the signal being transmitted to the optic nerve 6. Label the following diagram for the cornea, pupil, lens, iris, retina, optic nerve, vitreous humor, and choroid. Part 3: Hearing & Balance 1. Which type of receptor functions in sound and balance? 2. Label the following diagram with the terms: auditory nerve, ear drum (tympanic membrane), eustachian tube, semicircular canals, cochlea, ossicles (three tiny bones), pinna (outer ear), ear canal. T he Human Ear 64

Explanation / Answer

5. Cornea (Clear front region of the eye) ---> Pupil (opening in the center of the iris) -----> Lens ------> Retina ----> Optic nerve

6. A - Vitreous cavity, B - Lens, C - Cornea, D - Pupil, E - Iris, F - Sclera, G - Optic nerve, H - Retina

Part 3

1. The receptor which functions in sound and balance is mechanoreceptors. These are present in the inner ear especially in the hairs of the cochlea.

2. A - Outer ear, B - Ear canal, C - Tympanum (ear drum), D - Tympanic cavity, E - Eustachian tube, F - Semicircular canals, G - Vestibulocochlear nerve, H - Cochlea

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