D. Connective tissue cells. Loose connective tissue contains a variety of cell types. Those that will be considered in this lecture include: (1) endothelial cells, (2) pericytes, (3) fibroblasts, (4) macrophages, (5) plasma cells, (6) mast cells, and (7) fat cells.
niche noun [ C ] (POSITION) âº a job or position that is very suitable for someone, especially one that they like: He has carved/made a niche for himself as a financial advisor. âº an area or position that is exactly suitable for a small group of the same type: an ecological niche.
In 1958, George Evelyn Hutchinson used the term niche to describe the multi-dimensional space of resources available to and used by a species. Despite the varying definitions of niche, it is generally considered to pertain to how an organism or a population responds to as well as alters competition and the distribution of resources. It particularly describes the relational position of an organism or a population in a particular ecosystem.