The glands that secrete hormones comprise the endocrine signaling system. The term hormone is sometimes extended to include chemicals produced by cells that affect the same cell (autocrine or intracrine signalling) or nearby cells (paracrine signalling).
A fen is one of the main types of wetland, the others being grassy marshes, forested swamps, and peaty bogs. Along with bogs, fens are a kind of mire. Fens are usually fed by mineral-rich surface water or groundwater.
Definition: A range is a group or block of cells in a worksheet that have been selected or highlighted. When cells have been selected they are surrounded by an outline or border. Normally there is only one cell in the worksheet with a black outline.This is the active cell. range is a group or block of cells in a worksheet that have been selected or highlighted. When cells have been selected they are surrounded by an outline or border. Normally there is only one cell in the worksheet with a black outline.