When a person cries heavily, many times their nose begins to “run.” This is due to the fact that tears from the eyes will pass through the __________ and enter into the nasal cavity.
- nasolacrimal duct
- scleral sinus of the eye
- anterior cavity of the eye
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Rods and cones of the eye are __________.
- nociceptors
- proprioceptors
- photoreceptors
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Which of the following statements is true?
- Rods are more numerous than cones.
- The fovea centralis area consists of only rods.
- Due to the location of rods in the retina, you can see objects at night better if you look straight at the object.
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Which of the following correctly describes the pathway of light passing through the eye to the retina?
- cornea, anterior chamber, pupil, posterior chamber, lens, posterior cavity, retina
- cornea, anterior cavity, pupil, posterior cavity, lens, posterior chamber, retina
- cornea, anterior chamber, iris, pupil, posterior chamber, lens, posterior cavity, retina
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Which of the following statements is FALSE?
- The blind spot does not consist of any rods or cones.
- The blind spot is located at the center of the back of the eye.
- The blind spot is the area where nerves and blood vessels exit the eye.
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Which of the following impulse pathways is correct regarding vision?
- rods and/or cones are activated by light, graded potentials go to bipolar neurons then to ganglion cells, an action potential goes to the brain
- rods and/or cones are activated by light, graded potentials go to ganglion cells then to bipolar neurons, an action potential goes to the brain
- rods and/or cones are activated by light, action potentials go to bipolar neuron then go to ganglion cells, a graded potential goes to the brain
Please select an option
All the ganglion cells of the retina merge and exit the eye forming the optic nerve. What is the name of this exit area?
- optic disc
- macula lutea
- fovea centralis
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The anterior cavity of the eye is all of the area anterior to the __________.
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The __________ produces aqueous humor that fills the __________.
- retina; posterior cavity
- ciliary body; anterior cavity
- ora serrata; posterior chamber
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If the vitreous humor level falls below normal levels, the __________ may become detached and will affect vision.
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