Nervous tissue is made up of neutrons and neutroglial cells. Which of the following statements about these two cells is/are false ?
(i) Neuroglia make up more than one-half the volume of neutral tissue in our body
(ii) Neuroglia protect and support neurons
(iii) When a neuron is suitaly stimulated, an electrical disturbance is generated which swiftly travels along its cytosol
(iv) Arrival of the disturbance at the neuron's endings triggers stimulation or inhibition of adjacent neurons or other cells.

Options

A. (i) and (iv)
B. (ii) and (iii)
C. (iii) only
D. (iv) only

Explanation

To determine which statements about neurons and neuroglial cells are false, let's analyze each statement step by step.

### Step 1: Analyze Statement (i)
**Statement (i): Neuroglia make up more than one-half the volume of neural tissue in our body.**
- Neuroglial cells (or glial cells) do indeed make up a significant portion of the nervous tissue. It is commonly accepted that they can constitute more than half of the volume of the nervous system.
- **Conclusion:** This statement is **true**.

### Step 2: Analyze Statement (ii)
**Statement (ii): Neuroglia protect and support neurons.**
- Neuroglial cells play crucial roles in supporting, protecting, and maintaining the health of neurons. They provide structural support, nutrients, and insulation, and they also participate in the repair of nervous tissue.
- **Conclusion:** This statement is **true**.

### Step 3: Analyze Statement (iii)
**Statement (iii): When a neuron is suitably stimulated, an electrical disturbance is generated which swiftly travels along its cytosol.**
- This statement is misleading. When a neuron is stimulated, the electrical impulse (action potential) travels along the neuron's membrane (plasma membrane), not through the cytosol. The cytosol is the fluid inside the cell, but the action potential propagates along the membrane.
- **Conclusion:** This statement is **false**.

### Step 4: Analyze Statement (iv)
**Statement (iv): Arrival of the disturbance at the neuron's endings triggers stimulation or inhibition of adjacent neurons or other cells.**
- This statement accurately describes the process of synaptic transmission. When the electrical impulse reaches the axon terminals (endings), it can trigger the release of neurotransmitters, which can either stimulate or inhibit adjacent neurons or other types of cells.
- **Conclusion:** This statement is **true**.

### Final Conclusion
The only false statement among the options provided is **Statement (iii)**.

### Summary of Findings
- **False Statement:** (iii) When a neuron is suitably stimulated, an electrical disturbance is generated which swiftly travels along its cytosol.