ANATOMY

Detailed explanation-1: -Hormone receptors are proteins that bind hormones. Once bound, the hormone/receptor complex initiates a cascade of cellular effects resulting in some modification of physiology and/or behavior. Hormones usually require receptor binding to mediate a cellular response.

Detailed explanation-2: -The main two types of transmembrane receptor hormone receptor are the G-protein-coupled receptors and the enzyme-linked receptors.

Detailed explanation-3: -There are two classes of hormone receptors: those bound to the membrane and those present in the cytosol. Peptide hormones generally act through membrane receptors. The interaction of a hormone with its receptors leads to an activation of the adenylate cyclase and the production of cyclo-AMP, the second messenger.

Detailed explanation-4: -Hormone receptors are big protein molecules found in target cells. There are thousands of receptors on each cell. An important aspect of receptors is that each receptor recognises only one hormone. Thus, a hormone may only function on a target cell only if the receptor for that hormone is present on the target cell.