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