What describes smooth muscle cells?

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Study for the AAMI Certified Associate in Biomedical Technology Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What describes smooth muscle cells?

Explanation:
Smooth muscle cells are involuntary, non‑striated muscle found in the walls of many internal organs and blood vessels. They’re spindle-shaped and arranged in sheets, enabling slow, sustained contractions that move contents through hollow organs (like peristalsis in the gut) and help regulate vessel diameter. This distinguishes them from cardiac muscle, which forms the heart walls and is striated, and from skeletal muscle, which is voluntary and striated. So the description “involuntary muscle found inside many internal organs” correctly identifies smooth muscle.

Smooth muscle cells are involuntary, non‑striated muscle found in the walls of many internal organs and blood vessels. They’re spindle-shaped and arranged in sheets, enabling slow, sustained contractions that move contents through hollow organs (like peristalsis in the gut) and help regulate vessel diameter. This distinguishes them from cardiac muscle, which forms the heart walls and is striated, and from skeletal muscle, which is voluntary and striated. So the description “involuntary muscle found inside many internal organs” correctly identifies smooth muscle.

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