Question

In a synapse, chemical signals are transmitted from

• A. dendritic end of a neuron to the axonal end of another neuron.
• B. axon to the cell body of the same neuron.
• C. cell body to the axonal end of the same neuron.
• D. axonal end of one neuron to the dendritic end of another neuron.

Answer 1

The correct option is D

axonal end of one neuron to the dendritic end of another neuron.

The correct option is D.

Explanation for correct option:

• The synapse is a gap between two neurons through which electrical impulses are transferred from one neuron to another.
• The chemical signals are released from the axonal end of one neuron in the form of neurotransmitters.
• These neurotransmitters reach the dendrites of another neuron through the synapse.

Explanation for incorrect options:

Option A:

• The signals are not transmitted from one neuron's dendritic end to another neuron. The signals are released from the axonal end of the first neuron.

Option B:

• The signals cannot be transferred from axon to cell body in the backward flow. The signals cannot be transferred directly from the axon to the cell body of the next neuron. The signal transmission occurs between the axon of one neuron and the dendrite of the next neuron through the synapse.

Option C:

• The synapse transfers the signals from one neuron to another. It does not transmit the neurotransmitters within the same neuron.

Final answer: In a synapse, chemical signals are transmitted from the axonal end of one neuron to the dendritic end of another neuron.