Triceps and biceps are examples ofVoluntary musclesInvoluntary musclesSphincter musclesSmooth muscles

Understanding the Question

The question provides a list of muscle types and asks to classify triceps and biceps accordingly.

Analysis of Muscle Types

1. Voluntary muscles: These muscles are under conscious control, which means we can decide when to contract or relax them. Examples include skeletal muscles like biceps and triceps.

2. Involuntary muscles: These muscles operate without conscious control. They are responsible for functions like digestion and are found in organs such as the stomach and intestines.

3. Sphincter muscles: These are specialized involuntary muscles that control the opening and closing of various passages in the body, like the digestive tract.

4. Smooth muscles: These are another type of involuntary muscle that are not striated and are found in walls of hollow organs (e.g., blood vessels, digestive tract).

Final Answer

Triceps and biceps are examples of Voluntary muscles.