Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • During synaptic transmission of nerve impulse, neurotransmitter is released from synaptic vesicles by the action

During synaptic transmission of nerve impulse, neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct option for P and Q

Option: 1

P-Acetylcholine,Q-Ca^{2+}


Option: 2

P-Acetylcholine,Q-Na^{+}


Option: 3

P-GABA,Q-Na^{+}


Option: 4

P-Cholinesterase,Q-Ca^{2+}


Answers (1)

best_answer

 

 

As we have learnt:

Transmission of Impulses: At Chemical Synapse

  • Transmission across a chemical synapse is carried out by neurotransmitters, which are stored in synaptic vesicles in the axon terminals.
  • When nerve impulses travelling along an axon reach an axon terminal, channels for calcium ions (Ca2+) open, and calcium enters the terminal.
  • This sudden rise in Ca2+ stimulates synaptic vesicles to merge with the presynaptic membrane, and neurotransmitter molecules are released into the synaptic cleft. 
  • They diffuse across the cleft to the postsynaptic membrane, where they bind with specific receptor proteins. 
  • Depending on the type of neurotransmitter and the type of receptor, the response of the postsynaptic neuron can be toward excitation or toward inhibition. 
  • After excitatory neurotransmitters combine with a receptor, a sodium ion channel opens, and Na+ enters the neuron.
  • Serotonin is a neurotransmitter that controls mood and induces sleep
  • Endorphine is a neuropeptide which acts as a natural analgesic

- 

 

Therefore, Ca^{^{2+}} is responsible for the release of the neurotransmitter acetylcholine from axon terminal by rupturing the synaptic vesicle. Hence, the correct answer is option a.

Posted by

Ritika Harsh

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET UG result 2025 withheld? Reasons, implications; here’s what to do
anam-khan

NEET UG Result 2025: Allen Institute sweeps rankings with 4 in top 10, 39 in top 100
anam-khan

Mahesh Kumar from Rajasthan tops NEET UG 2025; secures AIR 1 rank, shares study plan, prep strategies

Latest Question