GROSS ANATOMY

Detailed explanation-1: -Beta-1 receptors, along with beta-2, alpha-1, and alpha-2 receptors, are adrenergic receptors primarily responsible for signaling in the sympathetic nervous system. Beta-agonists bind to the beta receptors on various tissues throughout the body.

Detailed explanation-2: -The two divisions of the autonomic nervous system are the sympathetic division (SNS) and the parasympathetic division (PNS) . The SNS contains alpha and beta receptors, and the PNS contains nicotinic and muscarinic receptors. Each type of receptor has a specific action when stimulated.

Detailed explanation-3: -Alpha-1 receptors are Gq-coupled receptors, whereas alpha-2 receptors are Gi-coupled receptors. Beta-2 and beta-3 are also Gi-coupled receptors. All beta receptors are also Gs-coupled receptors. Phospholipase C is activated, which leads to the formation of inositol triphosphate (IP3) and diacylglycerol (DAG).

Detailed explanation-4: -Difference Between Alpha and Beta Receptors Alpha receptors aid in survival by causing muscle contraction and vasoconstriction, while beta receptors do so by causing muscle relaxation and vasodilation.

Detailed explanation-5: -beta(1)-and beta(2)-adrenergic receptors are G protein-coupled receptors expressed throughout the body and serve as receptors for the catecholamines epinephrine and norepinephrine. They are targets for therapeutive agonists and/or antagonists in treatment of heart failure and asthma.