The heart of every human being contains several chambers. These chambers are responsible for obtaining and absorbing blood that comes back to the main organ from the rest of the organism. Health care professionals define these organs as the right and left atria respectively. This is the primary thing one should know about the heart to make sure it functions properly.

Our veins deliver the necessary amount of blood to an atrium. The right and left ventricles are located below. Those are lower chambers of the organ. The red liquid is extracted into these two big chambers while the muscles of the atrium shrink. Ventricles’ muscles also shrink; then, the blood is heaved ahead to the rest of the human body. That is how the heart rhythm (a.k.a. pulse) appears.

Now, it is time to define myocarditis. This is a rather rare disease. The primary cause is a viral infection. Another reason for the disease to show up is the opposite reaction of an immune system. When this defender of organism starts attacking individual’s body instead of fighting external threats, a strange reaction appears: it’s like one friend attacking his best friend. This phenomenon is often noticed during lupus attacks, so it is important to know the difference between myocarditis and similar cases.