Question

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what is the function of beta receptors?
causing increased heart rate and bronchodilation.
causing decreased heart rate and bronchodilation.
decreasing heart rate and bronchoconstriction.
inhibiting heart rate and promoting bronchoconstriction.
increasing heart rate and vasoconstriction.

Explanation:

Beta - adrenergic receptors, when activated by catecholamines like epinephrine and norepinephrine, generally cause an increase in heart rate (positive chronotropic effect) and bronchodilation by relaxing the smooth muscles in the bronchioles.

Answer:

Causing increased heart rate and bronchodilation.