detrusor muscles are present mainly in

Options

A. coat of kidney
B. muscular coat of urinary bladder
C. renal fascia of kidney
D. cortex of kidney

Answer

To solve the question about where detrusor muscles are mainly present, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Detrusor Muscle**:
- The detrusor muscle is a smooth muscle layer that forms part of the wall of the bladder. It plays a crucial role in the storage and expulsion of urine.

2. **Identifying the Function**:
- The primary function of the detrusor muscle is to contract and relax to facilitate the filling and emptying of the bladder. This muscle is involuntary, meaning it operates without conscious control.

3. **Analyzing the Options**:
- The question provides several options regarding where the detrusor muscle is located:
- Option 1: Muscular coat of the kidneys
- Option 2: Muscular coat of the urinary bladder
- Option 3: Renal fascia of the kidney
- Option 4: Cortex of the kidney

4. **Evaluating Each Option**:
- **Option 1**: Muscular coat of the kidneys - Incorrect, as the kidneys do not have a detrusor muscle.
- **Option 2**: Muscular coat of the urinary bladder - Correct, as this is where the detrusor muscle is located.
- **Option 3**: Renal fascia of the kidney - Incorrect, as this refers to connective tissue surrounding the kidney, not muscle.
- **Option 4**: Cortex of the kidney - Incorrect, as the cortex is part of the kidney structure and does not contain the detrusor muscle.

5. **Conclusion**:
- Based on the analysis, the correct answer is **Option 2: Muscular coat of the urinary bladder**.

### Final Answer:
The detrusor muscles are present mainly in the muscular coat of the urinary bladder.

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