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