Phenylephrine Functions as a _______ Because It Promotes Vasodilation in Nasal

question 34

Multiple Choice

Phenylephrine functions as a _______ because it promotes vasodilation in nasal mucosa.

• A)a₁ agonist.
• B)a₁ antagonist.
• C)b₁ agonist.
• D)b₁ antagonist.

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Definitions:

Sleep

A natural, reversible, periodic state of rest for the mind and body, in which consciousness is altered and sensory activity is reduced.

Repair

The physical and biological process by which tissue damage is fixed or restored.

Circadian Rhythm

A natural, internal cycle that dictates the alternation between sleep and wakefulness, repeating roughly on a 24-hour basis.

Suprachiasmatic Nucleus

A small region in the brain's hypothalamus responsible for controlling circadian rhythms, which are the body’s natural sleep and wake cycles.