Why does a hormone affect only a target cell?
The hormones dissolve in plasma and travel the circulatory pathways through various body tissues. So why do hormones affect only their target cells in particular tissues? Because only those target cells have receptors for that particular hormone. Some hormones bind to receptors on the surface of target cells.
What is the relationship between a hormone and target cell?
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. In other words, a particular cell is a target cell for a hormone if it contains functional receptors for that hormone, and cells which do not have such a receptor cannot be influenced directly by that hormone.
Why do hormones attach to specific target cells?
Unlike steroid hormones, lipid insoluble hormones do not directly affect the target cell because they cannot enter the cell and act directly on DNA. Binding of these hormones to a cell surface receptor results in activation of a signaling pathway; this triggers intracellular activity and carries out the specific effects associated with the hormone.
What makes a cell a target of a particular hormone?
What makes a cell a target of a particular hormone? the presence of a receptor for that particular hormone. The neurohypophysis (posterior pituitary) secrets. ... ___ has more target cells in the body than any of the others. Growth hormone (GH) Target organs most often regulate the pituitary gland via.
