Which statement correctly describes cardiac muscle tissue?

• A. Cardiac muscle is voluntary, nonstriated muscle controlled primarily by the autonomic nervous system.
• B. Cardiac muscle is involuntary, striated muscle found in the walls of the heart.
• C. Cardiac muscle is voluntary, striated muscle that attaches to bones.
• D. Cardiac muscle is involuntary, nonstriated muscle found in the walls of hollow organs such as the stomach.

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the types of muscle tissue in the human body. There are three main types: skeletal, cardiac, and smooth muscle. Each has distinct characteristics related to control (voluntary or involuntary), appearance (striated or nonstriated), and location.
2. Step 2: Recall that skeletal muscle is voluntary and striated, meaning it is consciously controlled and has a striped appearance under a microscope. It attaches primarily to bones to facilitate movement.
3. Step 3: Recognize that smooth muscle is involuntary and nonstriated. It is found in the walls of hollow organs such as the stomach, intestines, and blood vessels, and it controls movements like digestion and blood flow without conscious control.
4. Step 4: Identify cardiac muscle as involuntary and striated. It is found exclusively in the walls of the heart, where it contracts rhythmically and continuously without conscious effort, controlled mainly by the autonomic nervous system.
5. Step 5: Use this knowledge to evaluate the statements: the correct description of cardiac muscle tissue is that it is involuntary, striated muscle found in the walls of the heart.