Pinocytosis (Gr. Pinane - Drink, Kitos - Cell)

Pinocytosis is the process of cells absorbing liquid droplets. This process occurs by the formation of invaginations (invaginations) of the cell membrane, which are pinched into the cell, forming vesicles (vesicles). These vesicles contain liquid and substances dissolved in it, which thus enter the cell.

Pinocytosis plays an important role in the processes of nutrition and cell homeostasis. With its help, cells can absorb nutrients, regulate their osmolarity, and also introduce various signaling molecules into the cytoplasm. Pinocytosis is one of the main mechanisms of endocytosis along with phagocytosis and receptor-mediated endocytosis. It is widely distributed among eukaryotic cells.