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