Phlebotomy Technician Practice Exam (NCPT/CPT)

There are three main types of muscle tissues in the human body skeletal, cardiac, and smooth. Skeletal muscles, also known as striated muscles, are attached to your bones and help you move. Smooth muscles are found in your organs and are responsible for involuntary movements, such as digestion. Voluntary muscles, on the other hand, can be consciously controlled, such as the muscles in your arms and legs. Involuntary muscles, like smooth muscles, work without conscious control but are found in the heart and are responsible for pumping blood throughout the body. Therefore, the correct answer is B, striated muscle, as it specifically refers to the type of muscle that makes up the heart.