PSI Barbering Practice Exam

What type of muscle is found in the internal organs of the body, such as the stomach and intestines?

1. Cardiac

2. Skeletal

3. No striated

4. Striated

The correct answer is: No striated

The correct choice highlights that the type of muscle found in the internal organs, such as the stomach and intestines, is involuntary and does not have a striated appearance, which is characteristic of smooth muscle. Smooth muscle is also referred to as non-striated muscle because it lacks the banding pattern that distinguishes skeletal and cardiac muscle. This type of muscle is responsible for involuntary movements, such as the peristalsis that moves food through the digestive system, and it is influenced by the autonomic nervous system. In contrast, cardiac muscle is striated but is primarily found in the heart, functioning involuntarily to pump blood. Skeletal muscle, while also striated, is under voluntary control and is attached to bones, facilitating movement. Thus, the presence of non-striated muscle in the internal organs underscores its crucial role in involuntary functions necessary for maintaining bodily processes.