<Ul> <Li> Synaptic vesicles are located at presynaptic terminals in neurons and store neurotransmitters . When a signal comes down an axon, the synaptic vesicles fuse with the cell membrane releasing the neurotransmitter so that it can be detected by receptor molecules on the next nerve cell . </Li> <Li> In animals endocrine tissues release hormones into the bloodstream . These hormones are stored within secretory vesicles . A good example is the endocrine tissue found in the islets of Langerhans in the pancreas . This tissue contains many cell types that are defined by which hormones they produce . </Li> <Li> Secretory vesicles hold the enzymes that are used to make the cell walls of plants, protists, fungi, bacteria and Archaea cells as well as the extracellular matrix of animal cells . </Li> <Li> Bacteria, Archaea, fungi and parasites release membrane vesicles (MVs) containing varied but specialized toxic compounds and biochemical signal molecules, which are transported to target cells to initiate processes in favour of the microbe, which include invasion of host cells and killing of competing microbes in the same niche . </Li> </Ul> <Li> Synaptic vesicles are located at presynaptic terminals in neurons and store neurotransmitters . When a signal comes down an axon, the synaptic vesicles fuse with the cell membrane releasing the neurotransmitter so that it can be detected by receptor molecules on the next nerve cell . </Li> <Li> In animals endocrine tissues release hormones into the bloodstream . These hormones are stored within secretory vesicles . A good example is the endocrine tissue found in the islets of Langerhans in the pancreas . This tissue contains many cell types that are defined by which hormones they produce . </Li> <Li> Secretory vesicles hold the enzymes that are used to make the cell walls of plants, protists, fungi, bacteria and Archaea cells as well as the extracellular matrix of animal cells . </Li>

Where are the vesicles located in a cell