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WHAT IS PINOCYTOSIS?
It is a type of endocytosis in which the cell encloses small amount of the surrounding extracellular fluid along with its solutes in tiny pinocytotic vesicles (pinosomes).
Materials entering the cell  vesicle will fuse with the cell surface membrane and the contents leave when the plasma membrane invaginates to surround the material. The membrane seals off to form a vesicle, which can then move into the cell. This is endocytosis. If the material is fluid, minute vesicles are formed. This type of endocytosis is called pinocytosis.


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