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