Multiple choice

Which of the following special muscles is the heart made up of?

  1. Unstriated

  2. Cardiac

  3. Sinuses

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The heart is composed of cardiac muscle, which is a specialized type of muscle tissue found only in the heart. Cardiac muscle is striated (has bands) like skeletal muscle but involuntary like smooth (unstriated) muscle. The heart is NOT made of unstriated muscle (smooth muscle is found in organs like stomach and intestines), and sinuses are air-filled cavities, not muscle tissue.

Keep practicing — related questions