5. ascribe the steps involved in the release of transmitter from a neuron, beginning with the moment that the action potential arrives in the presynaptic terminal. b. Why does the closure of potassium channels in the presynaptic axon terminal change the amount of Ca 2+ entering? Intering a c. Why does a change in the amount of Ca 2+ entering a presynaptic terminal influence the amount of transmitter released?
A neuron is a specialized cell that functions as the basic unit of the nervous system. Neurons are responsible for transmitting information and facilitating communication between different parts of the body. They are composed of several parts, including the cell body, dendrites, axon, and axon terminal.
Information is transferred from one neuron to another through a specialised junction called a synapse during the synaptic process. An electrical signal (an action potential) is delivered to the presynaptic neuron's axon terminal to start this process. Neurotransmitters, which are chemical signals that cross the synapse and bind to receptors on the postsynaptic neuron, are released as a result of the appearance of the action potential. The postsynaptic neuron produces an electrical signal as a result of the binding of neurotransmitters to receptors, which can subsequently be conveyed to other neurons, muscles, or glands.
Step by step
Solved in 3 steps
