Kaplan Nursing Entrance Practice Exam

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Which of the following is NOT a characteristic of smooth muscle tissue?

Under involuntary control
Striated appearance
Found in hollow organs
Non-striated appearance

The correct answer is: Striated appearance

Smooth muscle tissue is characterized by its non-striated appearance, which distinguishes it from cardiac and skeletal muscle tissues that both exhibit a striated appearance. The absence of striations in smooth muscle reflects its unique structure and function, which allows it to contract and relax efficiently to facilitate movements within hollow organs such as the intestines, bladder, and blood vessels. Additionally, smooth muscle operates under involuntary control, meaning its contractions are regulated by the autonomic nervous system rather than being consciously controlled. This involuntary nature is essential for processes like digestion and regulating blood flow. The presence of smooth muscle in various hollow organs is a defining feature; it enables these organs to perform their functions by changing shape and size in response to different stimuli. Thus, the statement regarding striated appearance is not a characteristic of smooth muscle tissue, making it the correct choice in this context.