BIOD 152 AP Module 3 Questions and answers : Vision and the eye SUMMER 2024

Vision and the Eye 1. What are the five special senses? The five special senses vision, smell, taste, hearing, and equilibrium (balance) are the senses that have specialized organs containing specialized receptor cells, which carry their impulses by way of specialized somatic and visceral afferents. 2. What are the two parts of the outer layer of the eye? The outer fibrous layer includes the sclera and cornea. 3. What is included in the middle layer of the eye? The middle layer of the eye includes choroid, the ciliary muscle, and the iris. 4. The pupil is a hole in the __iris__. 5. The inner sensory layer is the __retina___. 6. What are the two types of photoreceptors and their functions? The more numerous cells are rods, which are stimulated in dim light. Rods are more sensitive to light but do not generate sharp or color images. The cones operate in bright light, helping to generate sharp color images. 7. The interior of the eye (posterior to the lens) is filled with__vitreous fluid___. 8. True or False: The vision pathway begins as the optic tracts, crosses at the optic chiasm and then moves through the optic nerve.