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The parts of neuron that receives nerve ...

The parts of neuron that receives nerve impulse and pass on graded electric potential towards the soma are -

A

Myelin sheath

B

Axon

C

Axon hillock

D

Dendrites

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the parts of a neuron that receive nerve impulses and pass on graded electric potentials towards the soma, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Neuron Structure**: - A neuron consists of several parts: the dendrites, soma (cell body), and axon. Each part has a specific function in the transmission of nerve impulses. 2. **Identifying the Function of Dendrites**: - Dendrites are the branched extensions of the neuron that receive signals from other neurons. They play a crucial role in gathering information and transmitting it toward the soma. 3. **Graded Electric Potentials**: - When dendrites receive nerve impulses, they generate graded potentials. These are changes in the membrane potential that vary in size and can lead to the generation of action potentials if they reach a certain threshold. 4. **Direction of Signal Transmission**: - The graded potentials generated in the dendrites are then passed on to the soma, where the information is processed. 5. **Evaluating the Options**: - **Myelin**: This is a fatty substance that insulates axons and speeds up signal transmission but does not receive impulses. - **Axon**: This part transmits impulses away from the soma but does not receive them. - **Axon Hillock**: This is the region where the axon begins and is involved in action potential generation, not in receiving impulses. - **Dendrite**: This is the correct answer as it receives impulses and transmits graded potentials toward the soma. 6. **Conclusion**: - Based on the functions of the parts of the neuron, the correct answer is **Dendrite**. ### Final Answer: The parts of the neuron that receive nerve impulses and pass on graded electric potential towards the soma are **Dendrites**. ---
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