Multiple choice

Which layer functions in autorhythmicity of the heart?

  1. Pericardium

  2. Epicardium

  3. Myocardium

  4. Endocardium

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Myocardium is made up of cardiac cells, which function in autorhythmicity. Some cardiac muscle cells are self-excitable, allowing for rhythmic waves of contraction to adjacent cells throughout the heart.