Beta 1 and Beta 2

1 Heart, 2 Lungs

BETA 1-One Heart

BETA 2-Two Lungs

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Beta 1 adrenergic receptors are mostly found in the heart. Beta 2 adrenergic receptors are found in lungs, GI tract, vascular smooth muscle, skeletal muscle, liver. Beta 1 beta blockers act primarily on the heart. Beta 2 beta blockers act primarily on the lungs.

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