Question

Which is not true of a synapse?

• A. Neurotransmitters affect postsynaptic neurons.
• B. Many neurons may be involved.
• C. A synaptic cleft separates the neurons of the synapse.
• D. Neurotransmitters are released from dendrites.

Answer 1

The correct option is D Neurotransmitters are released from dendrites.

• Synapse is the gap between two neurons where information from one neuron is transmitted to the next one.
• The neuron that transmits the signal is called as presynaptic neuron while the other that receives the signal is known as postsynaptic neuron. Thus, in case of chemical synapse, neurotransmitter is released from presynaptic neuron and is received by post synaptic ones.
• A single neuron can have many dendrites and a cell body, both of which can synapse with multiple neurons; a single neuron receives multiple excitatory and inhibitory signal.
• The extracellular space between two neurons is known as synaptic cleft.
• The neurotransmitters are stored in synaptic vesicles of axon terminal and are released into the synaptic cleft.

Hence, the correct answer is option D.