Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Learn How the Heart Works. Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and ...

The heart's beat provides pressure so blood can deliver oxygen and important nutrients to tissue all over your body. ... How Your Heart Works: Heart and Circulatory System, ... Pulmonary valve.

THE pulmonary circulation is of paramount importance in failure of the heart. The presence of dyspnea, orthopnea and hemoptysis and a diminution in vital capacity imply a profound change in the ...

The pulmonary system is responsible for providing fresh oxygen to the blood and ... Circulatory system diseases. Heart disease is the leading cause of death for both men and women in the ...

The heart is a muscular pump that continuously circulates blood throughout the body and consists of the systemic circulation, i.e., to and from the body, and the pulmonary circulation, i.e., to ...

Group 2: Pulmonary hypertension due to left heart disease. Elevated pressures in the pulmonary circulation are due to left-sided heart diseases such as heart failure or valvular diseases. 3.

Your circulatory system contains three blood vessel types: arteries, veins, and capillaries. Arteries carry blood from the heart, unlike veins, which carry blood to the heart. According to the ...