NURS 488 Lecture Notes - Lecture 12: Adrenergic Receptor, Bradykinin Receptor B2, Dobutamine
4 Dec 2017
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Lewis et al - chapters 19, 69, & 70. Adrenergic agonists: drugs that stimulate and mimic the actions of the sympathetic nervous system. Adrenergic receptors: receptor sites for the sympathetic neurotransmitters norepinephrine an epinephrine. Alpha adrenergic receptors: further divided into alpha 1 and alpha 2, both type are differentiate by their anatomical location in the tissues, muscles, and organs regulated by specific autonomic nerve fibers. Beta adrenergic receptors: a class of receptors that is divided in to beta 1 and beta 2. Beta 1 are located primarily in the heart, whereas beta 2 are located in the smooth muscle fibers of the bronchioles, arterioles and visceral organs. Positive chronotropic effect: an increase in heart rate. Positive dromotropic effect: an increase in the conduction of cardiac impulses through the atrioventricular node, which results in the transfer of nerve action potentials from the atria to the ventricles, which leads to ventricular contractions.
