Cytosis

Sometimes it may be shortened to -osis (necrosis, apoptosis) and may be related to some of the processes ending with -esis (eg diapedesis, or emperipolesis, cytokinesis) or similar suffixes.

Exocytosis of lysosomes commonly serves to repair damaged areas of the plasma membrane by replenishing the lipid bilayer.

An example of this would be when a receptor normally lies on the basal or lateral membrane of an epithelial cell, but needs to be trafficked to the apical side.

[7] Other studies, however, are exploring the idea that transcytosis may play a role in allowing medications to cross the blood-brain barrier.

The surface area of the membrane is determined[citation needed] by the balance of the two mechanisms and contributes to the homeostatic environment of the cell.

Small diameter or volume of cells eg RBC when classifying anemia which means microcytes dominating the blood picture.

Entry of material into the nucleus through endocytosis. Endocytosis: The membrane of the cell invaginates, creating a small circular pit that is taken into the cytosol of the cell. This circular membrane coated pit is a vesicle that is transported to the lysosome of the cell to be degraded by enzymes.
Mechanism of clathrin-dependent endocytosis. Clathrin-coated pits in endocytosis: The membrane of the cell invaginates using the protein clathrin. The clathrin uses actin to pull together the sides of the plasma membrane and form a vesicle inside the cellular cytosol.
Exocytosis (L) and Endocytosis (R)