GENERAL HISTOLOGY

Detailed explanation-1: -Most hormones circulate in blood, coming into contact with essentially all cells. However, a given hormone usually affects only a limited number of cells, which are called target cells. A target cell responds to a hormone because it bears receptors for the hormone.

Detailed explanation-2: -For instance, steroid hormones, like the sex hormone groups estrogens and androgens, seek out specific target cells and bind to receptor proteins located inside the nucleus of the cell, as shown below.