Largest smooth muscles occur in
(a) Leg
(b) Thigh
(c) Uterus of pregnant woman
(d) Urethra

Options

A. Leg
B. Thigh
C. Uterus of pregnant woman
D. Urethra

Answer

To determine where the largest smooth muscles occur, we can analyze each option provided in the question:

1. **Understanding Smooth Muscles**:
- Smooth muscles are involuntary muscles that do not have striations. They are found in various organs and structures in the body.

2. **Analyzing the Options**:
- **Option A: Leg** - The leg primarily consists of skeletal muscles, which are voluntary and striated, not smooth muscles.
- **Option B: Thigh** - Similar to the leg, the thigh is also made up of skeletal muscles, not smooth muscles.
- **Option C: Uterus of pregnant woman** - The uterus contains smooth muscles, which are responsible for contractions during childbirth. The uterus expands significantly during pregnancy, indicating that it has large smooth muscle fibers.
- **Option D: Urethra** - The urethra has some smooth muscle, but it is not as large or significant as that found in the uterus.

3. **Conclusion**:
- Based on the analysis, the largest smooth muscles are found in the **uterus of a pregnant woman**. Therefore, the correct answer is **Option C**.