Which statement describes smooth tissue?

Which statement describes smooth tissue?

• A. Attaches to bones
• B. Walls of internal organs
• C. Walls of the heart
• D. Detects stimuli

Answer: (B)

Smooth muscle tissue is the non-striated, involuntary muscle that lines the walls of hollow organs and blood vessels. Its main job is to contract in a controlled way to move contents through passages (like the digestive tract) and to regulate the passage of substances by changing vessel diameter or organ tone. That placement and function fit the statement that smooth tissue forms the walls of internal organs. In contrast, attaching to bones describes skeletal muscle, which enables voluntary movement; the heart’s walls are made of cardiac muscle; and detecting stimuli is a role of nervous tissue.

Smooth muscle tissue is the non-striated, involuntary muscle that lines the walls of hollow organs and blood vessels. Its main job is to contract in a controlled way to move contents through passages (like the digestive tract) and to regulate the passage of substances by changing vessel diameter or organ tone. That placement and function fit the statement that smooth tissue forms the walls of internal organs. In contrast, attaching to bones describes skeletal muscle, which enables voluntary movement; the heart’s walls are made of cardiac muscle; and detecting stimuli is a role of nervous tissue.