The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium. Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich ...

Strive for a minimum of 30 minutes of moderate-intensity cardio exercise on most days of the week. Such exercises strengthen ...

blood flows into the heart from a vein, goes into an atrium, then a ventricle, and out through an artery. The valves prevent the blood flowing backwards. The heart is relaxed and blood flows into ...

Originally appeared on the NOVA Web site Cut to the Heart. Let's get straight to the heart of the matter—the heart's job is to move blood. Day and night, the muscles of your heart contract and ...

Cut the pericardium to expose the heart. Cut through the coracoid bar and pull back to fully open the pericardial cavity. Locate the vessels entering and leaving the heart and the 2 heart chambers - ...

Chest Pain (Angina) Chest pain, known as angina, is a common warning sign of significant artery blockages. It often feels ...

Maintaining good circulation is vital for overall health and well-being. Every day, your heart tirelessly pumps blood through your circulatory system, delivering oxygen and nutrients to your body ...