MEDICAL PHYSIOLOGY

Detailed explanation-1: -The fusion of the vesicles with the plasma membrane is called exocytosis. In this way, for example, cells produce and secrete most of the proteoglycans and glycoproteins of the extracellular matrix, which is discussed in Chapter 19. All cells require this constitutive secretory pathway.

Detailed explanation-2: -Exocytosis is the last step of the secretory pathway and it involves the fusion of vesicles with the plasma membrane, a process that, in fungi, ensures the delivery of cell wall-synthesizing enzymes, membrane proteins, and lipids in areas of active growth.

Detailed explanation-3: -Exocytosis is the process of fusion of a membrane-bound vesicle with the cell membrane and subsequent release of the vesicle content to the outside.

Detailed explanation-4: -Exocytosis is a precise term that describes the process of granule or vesicular fusion with the plasma membrane and is accompanied by release of granule/vesicle contents to the cell exterior.