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

**Step-by-Step Solution:**

1. **Understanding Detrusor Muscles**: Detrusor muscles are smooth muscles that play a crucial role in the urinary system. They are responsible for the contraction of the bladder during urination.

2. **Identifying the Location**: The question asks where the detrusor muscles are primarily located. To answer this, we need to consider the functions of various structures associated with the urinary system.

3. **Analyzing the Options**:
- **Coat of Kidney**: This option is incorrect because the coat of the kidney consists of different layers and does not include detrusor muscles.
- **Muscular Coat of Urinary Bladder**: This option is correct. The detrusor muscles are indeed found in the muscular coat of the urinary bladder, and they contract to facilitate the expulsion of urine.
- **Renal Fascia of Kidney**: This option is also incorrect as renal fascia is connective tissue that supports the kidney and does not contain detrusor muscles.
- **Cortex of Kidney**: This is incorrect as well. The cortex of the kidney is involved in filtration and reabsorption, not in the contraction of muscles.

4. **Conclusion**: Based on the analysis, the correct answer is that detrusor muscles are present mainly in the **muscular coat of the urinary bladder**.

**Final Answer**: Detrusor muscles are present mainly in the muscular coat of the urinary bladder.

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