The heart has four chambers. The upper chambers are called atria and the lower chambers are called ventricles. The heart is also divided into right and left sides.
Un-oxygenated blood flows from the body into the right atrium. It is stored there for a short period and then pumped into the right ventricle. The right ventricle pumps blood into the lungs where it receives oxygen. It flows from the lungs into the left atrium where it is held before flowing into the left ventricle. The left ventricle is surrounded by the largest and strongest of the heart muscles. This large muscle is necessary to pump blood throughout the body.
Each side of the heart has a one-way valve to keep blood from going backward from the ventricles to the atria. The valve between the left atrium and left ventricle is called the mitral valve.
Heart disease in dogs is not commonly diagnosed unless one notices the common symptoms like unnatural fatigue or tiredness during normal exercise or acute breathlessness. The treatment of the dog heart disease depends upon the disease and the severity of the conditions. Dog heart diseases can be hereditary and congenital although it may not be noticeable early in the dog’s life.
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