noun
- the process by which a cell releases substances contained in vesicles by fusing the vesicle membrane with the cell membrane
Usage: biology term; cellular process
Examples
- Exocytosis allows cells to secrete proteins and hormones into the bloodstream.
- During exocytosis, neurotransmitters are released from the presynaptic neuron into the synaptic cleft.
- The cell uses exocytosis to expel waste products and maintain homeostasis.
- Insulin is released from pancreatic cells through the process of exocytosis.
- Exocytosis and endocytosis are complementary processes that regulate cell membrane composition.