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