- A Found exclusively in the heart and nowhere else in the body
- B Voluntary and striated, found mainly attached to bones
- C Multinucleate with visible striations under the light microscope
- D Involuntary and non-striated, found in the walls of internal organs
Correct answer: D. Involuntary and non-striated, found in the walls of internal organs
Explanation: Smooth muscle is involuntary and lacks visible striations; it is found in the walls of internal organs like the gut and blood vessels, unlike the voluntary, striated skeletal muscle attached to bones.
Concept context
The four basic animal tissue types (epithelial, connective, muscular, neural) and the cockroach as a model organism for organ-system level organisation.