Urethral meatus refers to the

Options

A. urinogenital duct
B. opening of vas deferens into urethra
C. external opening of the Urinogenital duct
D. muscles surrounding the urinogenial duct

Answer

To answer the question "Urethral meatus refers to the," we will analyze the options provided and understand the meaning of "urethral meatus."

### Step-by-step Solution:

1. **Understanding the Term "Urethral Meatus":**
- The term "meatus" refers to a natural opening or canal in the body. In this context, "urethral meatus" specifically refers to the opening of the urethra.

2. **Identifying the Function of the Urethra:**
- The urethra is a tube that carries urine from the bladder to the outside of the body. In males, it also serves as a passage for semen during ejaculation. Thus, the urethral meatus is the external opening through which both urine and semen exit the body.

3. **Analyzing the Options:**
- **Option A: Urinogenital tract** - This refers to the entire system that includes both the urinary and reproductive tracts, not specifically the opening.
- **Option B: Opening of vas deferens into urethra** - The vas deferens is part of the male reproductive system that transports sperm; it does not refer to the urethral meatus.
- **Option C: External opening of urinogenital duct** - This correctly describes the urethral meatus as it is the external opening where urine and semen exit.
- **Option D: Muscles surrounding the urinogenital duct** - This option refers to the muscles but does not define the urethral meatus.

4. **Conclusion:**
- Based on the analysis, the correct answer is **Option C: External opening of urinogenital duct**. This accurately describes what the urethral meatus is.