Final answer:
Phenylephrine causes nasal decongestion, bronchiole dilation, and pupil constriction.
Explanation:
Phenylephrine is expected to cause nasal decongestion as it is used in decongestants. It binds to adrenergic receptors in the bronchioles of the lungs causing them to dilate, aiding in clearing mucus. Phenylephrine also dilates the pupil and can be used to raise blood pressure.
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