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