Penalty for Non-Qualified Distributions. Distributions not used for qualified medical expenses are includable in gross income and, for applicants under age 65, subject to an additional 10% tax.
General Pharmacology. Beta-adrenoceptor agonists (Î²-agonists) bind to Î²-receptors on cardiac and smooth muscle tissues. They also have important actions in other tissues, especially bronchial smooth muscle (relaxation), the liver (stimulate glycogenolysis) and kidneys (stimulate renin release). Beta-adrenoceptors normally bind to norepinephrine released by sympathetic adrenergic nerves, and to circulating epinephrine.
The 5-HT1B receptor as an example of a metabotropic serotonin receptor. The serotonin receptors, also known as 5-hydroxytryptamine receptors or 5-HT receptors, are a group of G protein-coupled receptors (GPCRs) and ligand-gated ion channels (LGICs) found in the central and peripheral nervous systems. They mediate both excitatory and inhibitory neurotransmission.