pupillary reflex lab

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7 Terms

1
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what determines the size of the pupil

muscles in the iris which adjust based on light intensity and distance

2
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photopapillary reflex

adjustment of pupil based on light intensity

3
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what happens when bright light enters eye

what eye muscle controls this

type of response

pupils restrict due to the sphincter pupillae muscle of the iris

parasympathetic response

4
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what happens when dim light enters the eyes

pupils get larger due to dilator pupillae muscle of iris

sympathetic response

5
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where do the muscles of the iris innervate

oculomotor nerve (cranial nerve 3)

6
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what happens when you view a near object

pupils constrict to reduce amount of light entering eyes, making the field of view more focused on the fovea centralis

7
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fovea centralis

most sensitive, acute area of retina