Answered

Join IDNLearn.com and start getting the answers you've been searching for. Get the information you need from our experts, who provide reliable and detailed answers to all your questions.

Which of the following is responsible for the fusion of vesicles in the axon terminal to release the neurotransmitter into the synaptic cleft?

A. Ca2+ voltage-gated channels
B. Na+ voltage-gated channels
C. K+ voltage-gated channels
D. Depolarization

Sagot :

GinnyAnsweridn

Final answer:

Calcium ions are crucial for vesicle fusion and neurotransmitter release in the axon terminal at a chemical synapse.


Explanation:

Calcium ions are responsible for the fusion of vesicles in the axon terminal to release neurotransmitters into the synaptic cleft. When an action potential depolarizes the presynaptic membrane, it opens voltage-gated Ca²+ channels, allowing Ca²+ to enter the cell. This influx of calcium triggers a signaling cascade that leads to the fusion of synaptic vesicles with the presynaptic membrane, releasing neurotransmitters through exocytosis.


Learn more about Neurotransmitter release at the axon terminal here:

https://brainly.com/question/12530626


We are happy to have you as part of our community. Keep asking, answering, and sharing your insights. Together, we can create a valuable knowledge resource. IDNLearn.com is committed to your satisfaction. Thank you for visiting, and see you next time for more helpful answers.