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Which part of the eye is a muscle that regulates the size of the pupil?
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15. The Special Senses
Structure of the Eyeball
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What part of the eye is known as the blind spot?
A
Fovea centralis
B
Macula lutea
C
Optic disc
D
Cornea
Guida verificata passo dopo passo1
Understand that the 'blind spot' in the eye refers to an area where no photoreceptor cells (rods or cones) are present, meaning it cannot detect light.
Identify the structure in the eye responsible for this phenomenon. The optic disc is the point where the optic nerve exits the eye, and it lacks photoreceptors, creating a blind spot.
Differentiate the optic disc from other parts of the eye: the fovea centralis is a small pit in the retina that provides the clearest vision, and the macula lutea is an area surrounding the fovea that is rich in cones.
Recognize that the cornea is the transparent front part of the eye that covers the iris and pupil, playing a role in focusing vision but not related to the blind spot.
Conclude that the optic disc is the correct answer as it is the anatomical location of the blind spot in the human eye.
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