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