Which muscle tissue is found in the walls of blood vessels and hollow organs?

Which muscle tissue is found in the walls of blood vessels and hollow organs?

• A. Skeletal
• B. Nervous
• C. Smooth
• D. Cardiac

Answer: (C)

Smooth muscle is found in the walls of blood vessels and hollow organs. It is non‑striated and involuntary, made up of spindle-shaped cells that contract to regulate the diameter of vessels and to move contents through organs like the stomach and intestines. This type of muscle can sustain longer, slower contractions and respond to autonomic signals, which is why it’s ideal for controlling flow and movement inside hollow structures. Skeletal muscle is attached to bones and controlled voluntarily, and cardiac muscle forms the heart walls and is also not what lines vessels or hollow organs.

Smooth muscle is found in the walls of blood vessels and hollow organs. It is non‑striated and involuntary, made up of spindle-shaped cells that contract to regulate the diameter of vessels and to move contents through organs like the stomach and intestines. This type of muscle can sustain longer, slower contractions and respond to autonomic signals, which is why it’s ideal for controlling flow and movement inside hollow structures. Skeletal muscle is attached to bones and controlled voluntarily, and cardiac muscle forms the heart walls and is also not what lines vessels or hollow organs.