lin made in the pancreas, fuse with the plasma membrane and open to expel their contents out of the cell surface.
Endocytosis is the reverse process, the one by which materials are taken into cells (Langara; Membrane). There are several different types of endocytosis processes. Pinocytosis is the name given to endocytosis of fluids into cells, along with whatever molecules they contain. It happens by the invagination, or pinching off of a section of the plasma membrane to form a vesicle within the cytoplasm containing whatever was in the surrounding solution when the pinocytosis took place (Langara). This is an unspecific process on
...