At the terminal end of the axon is a branched structure with ends called synaptic knobs. From this structure chemical signals can be sent to neighboring neurons. Transmission of nerve impulse along the axon
When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters (mostly acetylcholine) are exocytosed and the contents are released into the neuromuscular junction.These neurotransmitters bind to receptors on the postsynaptic membrane and lead to its depolarization.he small depolarization associated with the release of acetylcholine from one synaptic vesicle is called a miniature end-plate potential (MEPP). MEPPs are additive and lead to a greater depolarization of the postsynaptic membrane and become end plate potentials (EPPs).
Ions enter and leave the membrane of a myelinated axon at the: nodes of ranvier: In which portion of a neuron would you expect to find the largest number of vesicles? the axon terminal: Which of the following will produce an EPSP? opening a sodium channel: An autoreceptor is located on the _____ and is sensitive to _____. A) presynaptic membrane; the transmitter released by that neuron