The SECRETORY vesicle is a vesicle that mediates the vesicular transport of cargo - e.g. hormones or neurotransmitters - from an organelle to specific sites at the cell membrane,
where it docks and fuses to release its content. It has been demonstrated that membrane-bound secretory VESICLES dock and fuse at porosomes, which are SPECIALIZED supramolecular structures at the cell membrane.,
Secretory vesicles are TINYLITTLE packages in which certain cell secretions can be transported.
The vesicles are membrane bound and produced by the golgi apparatus or endoplasmic reticulum.
Most vesicles will have specialized functions and specific materials which they transport.