What two muscles are present in the iris? What cranial nerve is used to perform mydriasis and miosis?
A. Pupillary sphincter and dilator; Oculomotor (III)
B. Pupillary sphincter and constrictor; Oculomotor (III)
C. Pupillary sphincter and dilator; Trigeminal (V)
D. Pupillary sphincter and constrictor; Trigeminal (V)
Preview next quiz:
There are two layers of cells in the non-photosensitive retina on the ciliary body. How many are pigmented?
A. None
B. Both
C. Only the outer
D. Only the inner
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