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