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