Did you mean : synaptic knobs secrete

https://en.wikipedia.org/wiki/Chemical_synapse

Chemical synapses are biological junctions through which neurons' signals can be sent to ... Synaptic vesicles are docked at the presynaptic plasma membrane at regions called active zones. ... the arrival of a nerve impulse (or action potential ) and occurs through an unusually rapid process of cellular secretion (exocytosis) .

https://www.khanacademy.org/science/biology/human-biology/neuron-nervous-system/a/the-synapse

Inside the axon terminal of a sending cell are many synaptic vesicles. These are membrane-bound spheres filled with neurotransmitter molecules. There is a ...

https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/neural-cells-and-neurotransmitters/v/neurotransmitter-release

There the calcium ions interact with the neurotransmitter containing vesicles ... with the cell membrane, and release the neurotransmitters into the synaptic cleft.

http://www.biologyreference.com/Se-T/Synaptic-Transmission.html

Axons often have thousands of terminal branches, each ending as a bulbous enlargement, the synaptic knob or synaptic terminal. At the synaptic knob, the ...

https://www.ncbi.nlm.nih.gov/books/NBK21521/

The “classic” neurotransmitters are stored in synaptic vesicles, uniformly ... Many neurons secrete neuropeptides, a varied group of signaling molecules that ...

https://qbi.uq.edu.au/brain-basics/brain/brain-physiology/action-potentials-and-synapses

Nov 9, 2017 ... When an action potential reaches the presynaptic terminal, it causes neurotransmitter to be released from the neuron into the synaptic cleft, ...

https://www.sciencedirect.com/topics/neuroscience/synaptic-vesicle

Synaptic vesicles (SVs) are small, electron-lucent vesicles that are clustered at ..... by regulated endocytosis and recycled for additional rounds of secretion.

http://www.biologymad.com/NervousSystem/synapses.htm

Apr 17, 2004 ... a postsynaptic ending that contains receptor sites for neurotransmitters and,. a synaptic cleft or space between the presynaptic and ...

https://www.nature.com/subjects/synaptic-vesicle-exocytosis

Before exocytosis, neurotransmitter-filled synaptic vesicles are docked at the plasma ... Ca2+-independent but voltage-dependent secretion is mediated by the  ...

https://www.rsc.org/Education/Teachers/Resources/cfb/nerves.htm

Axons end in a series of synaptic knobs. These structures stimulate other nerves or a target organ, in which case a physical response happens (e.g. an arm to ...