reviewed by Rao.

Mechanism of action

As a hormone, adrenaline acts on nearly all body tissues by binding to adrenergic receptors. Its effects on various tissues depend on the type of tissue and expression of specific forms of adrenergic receptors. For example, high levels of adrenaline cause smooth muscle relaxation in the airways but causes contraction of the smooth muscle that lines most arterioles.

Adrenaline

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