Stimulus from the environment is detected by the nerve cells. The stimulus acquired is transmitted in the form of electrical impulse. From the options given below choose the correct scheme showing the direction in which the nerve impulse travels. (Arrows shows the direction of impulse flow)

Options

A.
B.
C.
D.

Explanation

To solve the question regarding the direction of nerve impulse transmission, we will follow these steps:

### Step 1: Understand the Structure of a Neuron
A neuron consists of three main parts:
- **Dendrites**: These are tree-like structures that receive signals from other neurons or stimuli from the environment.
- **Cell Body (Soma)**: This part contains the nucleus and is responsible for the metabolic activities of the neuron.
- **Axon**: This long, thin structure transmits electrical impulses away from the cell body to other neurons or muscles.

### Step 2: Identify the Direction of Impulse Flow
The direction of nerve impulse transmission is crucial:
- **Dendrites** receive the stimulus and the electrical impulse travels towards the cell body.
- From the cell body, the impulse travels down the **axon** and away from the neuron to the next neuron or muscle.

### Step 3: Analyze the Options Provided
Look at the given options and identify which one correctly represents the flow of the impulse:
- The correct option should show arrows pointing towards the dendrites and away from the axon.

### Step 4: Select the Correct Scheme
Choose the option that accurately depicts the flow of the nerve impulse as described:
- **Dendrite → Cell Body → Axon** (with arrows indicating this direction).

### Final Answer
The correct scheme showing the direction in which the nerve impulse travels is the one that illustrates the flow from the dendrites to the cell body and then down the axon.

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