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