63: The eye (physiology) Quizellenj2022-12-02T13:36:08-05:00 Please sign up for the course before taking this quiz. 1. Your blind spot is right over your fovea.1 True False 2. To view things farther away, the lens must become flatter.1 True False 3. What holds the rhodopsin molecule in place?1 retinal molecules Golgi bodies phospholipid membrane cytoskeleton microtubules 4. Which of these is a color that cones don’t respond to?1 blue red yellow green 5. You have more rods than cones.1 True False 6. Which of these parts bends light?1 iris cornea retina ciliary body optic nerve 7. Which is larger, the macula or the fovea?1 macula fovea 8. Which amino acid to we find functioning as a neurotransmitter at the ends of rods and cones?1 lysine glycine glutathione glutamate 9. Which one of these allows us to see at night?1 rods cones 10. Which cell part makes a microtubule highway through a narrow passage in the rod and cone cells?1 centrioles nucleus ribosomes Golgi bodies mitochondria 11. Which is smaller, rhodopsin or retinal?1 retinal rhodopsin 12. Which of these parts holds the lens in place?1 zonules of Zinn aqueous humor cornea canals of Schlemm iris 13. Which of these leads right into the optic nerve?1 ganglion cell bipolar cell amacrine cell horizontal cell 14. Which of these is NOT a job that the pigmented epithelial cells do?1 Absorbs extra photons of light. Nourish the rod and cone cells. Provide a connection between rods and cones so they can cooperate. Form a protective barrier so that germs stay out. Prune the tips off the rod and cone cells and recycle them. 15. Which of these let the rods and cones communicate with each other?1 horizontal cells bipolar cells ganglion cells amacrine cells 16. Pigmented epithelial cells regenerate when damaged, just like skin cells.1 True False 17. The retina sees images upside down.1 True False 18. Where will you find the highest number of cone cells?1 They are evenly spaced all over the retina. In the macula At the outer edges of the retina 19. What happens when a photon of light hits the retinal molecule?1 It starts an action potential. It changes shape and becomes straight. It regenerates. It loses an electron. It falls out of the rhodopsin molecule. 20. When it is dark, the rods are switched on and are releasing neurotransmitters.1 True False 77: Joints 78: Muscles (as organs) Back to: 63: The eye (physiology)
