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 is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is ...

The four valves of the heart allow blood to flow through the heart in the right direction. The valves open or close each time the heart beats. Problems with the heart valves can lead to ...

It illustrates blood flow dynamics through the heart's chambers, including the right atrium, right ventricle, and pulmonary arteries, ...

Valves control the flow of blood through your heart’s ventricles and arteries. And some minor heart defects can involve the valves, including: Stenosis.

THE flow of blood through the microvasculature is as vital to life as that through the heart and great vessels. Vasomotor control of the circulation is accomplished principally in the arteriolar ve ...

Heart attack (blocked blood flow to the heart that causes heart muscle to die) Pulmonary embolism (blocked blood flow to the lungs that causes lung tissue to die which can cause shortness of breath or ...

WE have recently studied 2 patients with symptoms of cerebral ischemia in whom a reversal of blood flow through the left vertebral artery was demonstrated. ... Heart J. 62:194, 1961. Crossref. PubMed.

When the heart is relaxed between beats, the balloon inflates and improves blood flow through the coronary arteries, which supply the heart muscle with oxygenated blood. A weakened heart may not ...

Uncontrolled or undetected high blood pressure, also called hypertension, is one of the most concerning precursors to heart problems.Because hypertension damages one's arteries and decreases the ...

Seaweed—the marine algae that covers beaches across the world—could be key to improving the surgeries, which are conducted to restore blood flow to areas of the heart where vessels have become ...