Urine is stored in urinary bladder till

Options

A. A valuntary signal is given by PNS
B. A involuntary signal is given by CNS
C. A voluntary signal is given by CNS
D. A involuntary signal is given by PNS

Answer

**Step-by-Step Solution:**

1. **Understanding Urine Formation**: Urine is formed in the kidneys by the nephron, which is the functional unit of the kidney. The nephron processes blood to remove waste and excess substances, ultimately producing urine.

2. **Transport to the Urinary Bladder**: Once urine is formed, it is transported through the ureters to the urinary bladder, where it is stored until it is ready to be expelled from the body.

3. **Storage in the Urinary Bladder**: The urinary bladder can hold urine until it reaches a certain capacity. As the bladder fills, it stretches, which activates stretch receptors in the bladder wall.

4. **Signal to the Central Nervous System (CNS)**: When the bladder is sufficiently stretched, these stretch receptors send signals to the CNS, indicating that it is time to void the bladder.

5. **Voluntary Control**: The CNS processes this information and sends a voluntary signal back to the bladder, indicating that it is time to release the urine. This process is known as micturition.

6. **Conclusion**: Therefore, urine is stored in the urinary bladder until a voluntary signal is given by the central nervous system (CNS).

**Final Answer**: Urine is stored in the urinary bladder till a voluntary signal is given by the CNS.

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