1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svetradugi [14.3K]
2 years ago
14

How does a presynaptic neuron know just how much of a certain neurotransmitter (NT) it has released into the synapse?

Biology
1 answer:
Llana [10]2 years ago
4 0

Answer:

A presynaptic neuron knows when and how much of a certain neurotransmitter it has to release into the synapse by the frequency of the action potential.

Explanation:

Two nuerons connect to each other through synapse. When an action potential, or nerve impulse, arrives at the axon terminal, it activates voltage-gated calcium channels in the cell membrane, then the calcium which is present in hi highconcentration outside the neuron than inside, rushes into the cell. The Calcium then allows synaptic vesicles to fuse with the axon terminal membrane, releasing neurotransmitter into the synaptic cleft.

The nuerotransmitter than binds to the receptors at the post-synaptic cleft and causes the opening or closing of the channels, hence, depolarizing or hyperpolarizing the cells.This can produce a change in the membrane potential—voltage across the membrane of the receiving cell.

You might be interested in
Why is it necessary to have enzymes for life process
svp [43]

Enzymes are proteins that control the speed of chemical reactions in your body. Without enzymes, these reactions would take place too slowly to keep you alive. Some enzymes, like the ones in your gut, break down large molecules into smaller ones.

6 0
3 years ago
Read 2 more answers
The original sequence of DNA was ACT GGA GGG CAC but when the DNA was replicated an error
antoniya [11.8K]

Answer:

Deletion mutation

Explanation:

7 0
3 years ago
PLS HELP ME PLS PLS PLS
LiRa [457]

Survival of the fittest. If one organism thrives better in an enviornment and the other organism struggles, the one that is more adapted will obviously play a part in helping the less adapted organism die out. Food is a major point along with other aspects

5 0
2 years ago
What are motor voter laws?
algol13
<span>Another name for the National Voter Registration Act of 1993, designed to reverse declining voter registration by allowing voters to register at motor vehicle departments.</span>
3 0
3 years ago
Horseshoe crabs are one of the only five living species of arthropods class
Musya8 [376]
C. Arachnida.
hope it's correct.
6 0
3 years ago
Read 2 more answers
Other questions:
  • The temperature around Earth's equator stays about the same throughout the year. Why does this happen?
    7·1 answer
  • The formation of a cation and an anion is indicative of a(n):
    7·1 answer
  • In seedless plants, a fertilized egg will develop into _____.
    10·1 answer
  • 5. competition
    13·2 answers
  • terriers are a breed of dog that tend to have tough, bristly fur that helps to protect them from the small rodents that they hun
    7·1 answer
  • The cytoplasm of a certain cell, such as a neuron, already has a high concentration of K ions. How can K ions continue to enter
    12·1 answer
  • Role of T helper cells in the specific immune response
    12·2 answers
  • How do ecosystems return to normal after a flood?
    10·1 answer
  • Which type of population pyramid occurs in locations where fertility rates are high, death rates fall, and more people
    5·2 answers
  • Question 15
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!