What will happen if the stretch receptors of the urinary bladder wall are totally removed?

Options

A. there will be no voluntary control over micturition
B. urine will continue to collect normally in the bladder
C. there will be no micturition
D. urine will collect in urethra.

Explanation

### Step-by-Step Solution:

1. **Understanding the Role of Stretch Receptors**:
- Stretch receptors in the urinary bladder wall are responsible for detecting the filling of the bladder. They sense when the bladder is stretching due to the accumulation of urine.

2. **Micturition Process**:
- Micturition is the process of emptying the bladder. It involves two main steps:
- **Filling**: The bladder fills progressively until the tension in its walls rises above a certain threshold.
- **Maturation Reflex**: Once the threshold is reached, a nervous reflex known as the micturition reflex is triggered, leading to bladder contraction and urination.

3. **Function of Stretch Receptors**:
- The stretch receptors send sensory signals to the sacral segments of the spinal cord via pelvic nerves. This initiates the micturition reflex, which causes the bladder to contract and facilitates urination.

4. **Consequences of Removing Stretch Receptors**:
- If the stretch receptors are completely removed, the bladder will still fill with urine, but there will be no signals sent to the spinal cord.
- As a result, the micturition reflex will not be activated, leading to the absence of bladder contraction.

5. **Final Outcome**:
- Without the stretch receptors, the bladder will not be able to signal the need to urinate, meaning that while urine will continue to accumulate, the individual will not experience the urge to urinate, and the bladder will not empty automatically.

### Conclusion:
If the stretch receptors of the urinary bladder wall are totally removed, the bladder will fill with urine but will not be able to initiate the micturition reflex, resulting in an inability to urinate.

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