Uninucleate muscles are

Options

A. Smooth muscles
B. Skeletal muscles
C. Voluntary muscles
D. All the above .

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Uninucleate":**
- The term "uninucleate" refers to a cell that contains only one nucleus. This is a key characteristic that helps in identifying certain types of muscle tissues.

2. **Identifying Muscle Types:**
- There are different types of muscle tissues in the body, primarily categorized into smooth muscles, skeletal muscles, and cardiac muscles. Each type has distinct structural characteristics.

3. **Analyzing Smooth Muscles:**
- Smooth muscles are involuntary muscles found in the walls of internal organs. They are characterized by having a single, spindle-shaped nucleus in each muscle cell. This confirms that smooth muscles are indeed uninucleate.

4. **Examining Skeletal Muscles:**
- Skeletal muscles are voluntary muscles that are responsible for movement. They are elongated and tubular in shape and contain multiple nuclei located at the periphery of the cells. This indicates that skeletal muscles are multinucleate, not uninucleate.

5. **Considering Voluntary Muscles:**
- Voluntary muscles refer to skeletal muscles, which we have already established as multinucleate. Therefore, this option is also incorrect when identifying uninucleate muscles.

6. **Conclusion:**
- Based on the analysis, the only type of muscle that is uninucleate is the smooth muscle. Thus, the answer to the question "Uninucleate muscles are" is **smooth muscles**.

**Final Answer:**
Uninucleate muscles are smooth muscles.

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