Is a coated protein vesicle that transports completely across the cell and released by exocytosis on the opposite side.
Transcytosis is a cellular process that combines both exocytosis and endocytosis. It involves the uptake of molecules into the cell through endocytosis, their transport across the cell, and then the release of these molecules through exocytosis on the opposite side of the cell.
transporting an endosome from one side of a cell to the other and releasing the contents by exocytosis
Insulin does crosses the blood brain barrier. Insulin crosses the blood brain barrier through the process of receptor-mediated transcytosis.
Transcytosis is a cellular process in which molecules or particles are transported through a cell, typically from one side to the other. This process involves vesicles forming on one side of the cell, internalizing the molecules or particles, and then transporting them across the cell to release them on the opposite side. It is important for the delivery of substances across cell barriers, such as crossing the blood-brain barrier.
Larger molecules can cross epithelial membranes in capillaries through processes like transcytosis, where the molecule is taken up by the cell on one side and transported across the cell to be released on the other side. This process often involves vesicles that transport the molecule across the cell.
Bulk transport is in 2 forms, exocytosis and endocytosis. Each of these 2 forms can then be sub divided into phagocytosis (movement of solids) and pinocytosis (movement of liquids) When bulk transport occurs, a phospholipid bilayer membrane merges with the cell membrane, and forces the contents of the vesicle in.out of the cell.