×

Exocytosis - secretion

6585

0

HWC

Exocytosis is another method of vesicular transport that moves large volumes Of fluid or chemicals out of the cell. It is a process by which a cell transports secretory products through the cytoplasm to the plasma membrane. A examples of cellular secretory products: 1. Secreted protein - enzymes, peptide hormones, and antibodies 2. Neurotransmitters from nerve cells 3. Plasma membrane proteins 4. Antigens - pieces of bacteria or other invaders which stimulate the immune response. Exocytosis can be either calcium-dependent or calcium-independent. In calcium-dependent exocytosis, an influx of calcium into the cell will stimulate secretion. This happens when a protein is only secreted when needed. • Vesicles seal to the plasma membrane and release their contents to the extracellular fluic ' Cells remove waste products resulting from endocytosis. • Secretion of neurotransmitters, hormones, and digestive enzymes is an important function of exocytosis.

Share

Embed

Copy and paste this code into your website or blog.

Add To

You must login to add videos to your playlists.

Comments

0 Comments total

to post comments.

No comments have been posted for this video yet.