Class 11 NEET Biology Neural Control and Coordination

Concept:Neurotransmitters are chemical messengers that transmit signals across a synapse.Key Fact:Receptors for neurotransmitters are located on the membrane of the neuron receiving the signal, not on the sending side.Explanation:In a chemical synapse, the pre-synaptic neuron releases neurotransmitters into the synaptic cleft.These molecules then bind to specific receptor proteins present on the membrane of the post-synaptic neuron or target cell.This binding triggers a response in the post-synaptic cell (e.g., opening ion channels or initiating a second messenger cascade).Schwann cells and myelin sheaths are insulating structures and do not have neurotransmitter receptors. The pre-synaptic membrane stores and releases neurotransmitters but does not possess postsynaptic receptors.Answer:D. Post-synaptic membrane