63: The eye (physiology) Quizellenjmchenry2022-12-02T13:36:08-05:00 Please sign up for the course before taking this quiz. 1. Which is larger, the macula or the fovea?1 macula fovea 2. 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 3. Which is smaller, rhodopsin or retinal?1 rhodopsin retinal 4. Which of these is NOT a job that the pigmented epithelial cells do?1 Form a protective barrier so that germs stay out. Nourish the rod and cone cells. Provide a connection between rods and cones so they can cooperate. Absorbs extra photons of light. Prune the tips off the rod and cone cells and recycle them. 5. What holds the rhodopsin molecule in place?1 cytoskeleton microtubules phospholipid membrane Golgi bodies retinal molecules 6. Which of these parts holds the lens in place?1 aqueous humor iris zonules of Zinn canals of Schlemm cornea 7. Which of these leads right into the optic nerve?1 horizontal cell ganglion cell bipolar cell amacrine cell 8. Which of these let the rods and cones communicate with each other?1 ganglion cells horizontal cells amacrine cells bipolar cells 9. Which one of these allows us to see at night?1 cones rods 10. Which of these parts bends light?1 iris ciliary body retina optic nerve cornea 11. Which cell part makes a microtubule highway through a narrow passage in the rod and cone cells?1 nucleus mitochondria centrioles ribosomes Golgi bodies 12. When it is dark, the rods are switched on and are releasing neurotransmitters.1 True False 13. Your blind spot is right over your fovea.1 True False 14. To view things farther away, the lens must become flatter.1 True False 15. The retina sees images upside down.1 True False 16. You have more rods than cones.1 True False 17. What happens when a photon of light hits the retinal molecule?1 It regenerates. It falls out of the rhodopsin molecule. It starts an action potential. It changes shape and becomes straight. It loses an electron. 18. Which of these is a color that cones don’t respond to?1 yellow red blue green 19. Which amino acid to we find functioning as a neurotransmitter at the ends of rods and cones?1 glutathione lysine glutamate glycine 20. Pigmented epithelial cells regenerate when damaged, just like skin cells.1 True False 77: Joints 78: Muscles (as organs) Back to: 63: The eye (physiology)
