Triceps and biceps are examples of

Options

A. voluntary muscles
B. involuntary muscles
C. sphincter muscles
D. smooth muscles.

Explanation

**Step-by-Step Solution:**

1. **Identify the Muscles**: The question asks about triceps and biceps, which are muscles located in the upper arm.

2. **Understand Muscle Types**: There are two main types of muscles in the human body: voluntary and involuntary muscles. Voluntary muscles are those that we can consciously control, while involuntary muscles function automatically without our control.

3. **Classify Triceps and Biceps**: Triceps and biceps are both voluntary muscles. This means we can control their movement, such as when we lift or lower our arms.

4. **Function of Triceps and Biceps**: The biceps are located at the front of the upper arm and are primarily responsible for flexing the elbow (pulling the arm up), while the triceps are located at the back and are responsible for extending the elbow (pushing the arm down).

5. **Conclusion**: Since triceps and biceps are muscles that we can control and are involved in movements of the arm, they are classified as voluntary muscles.

**Final Answer**: Triceps and biceps are examples of voluntary muscles.

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