The teacher drew a diagram showing how the blood flows through the heart. Small amounts of alcohol are held to be good for the heart. The bullet missed his heart by a couple of centimetres. I could feel …

3 days ago · Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke. Also learn about cardiovascular conditions, ECC and CPR, donating, heart …

Your heart contains four muscular sections (chambers) that briefly hold blood before moving it. Electrical impulses make your heart beat, moving blood through these chambers.

[8] The heart pumps blood with a rhythm determined by a group of pacemaker cells in the sinoatrial node. These generate an electric current that causes the heart to contract, traveling through the …

Dec 6, 2025 · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump …

Aug 22, 2024 · 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.

Your heart is the organ in your chest that pumps the blood around your body. People also use heart to refer to the area of their chest that is closest to their heart.

6 days ago · Explore the anatomy and core functions of the heart with Innerbody's interactive 3D model.

Jan 8, 2025 · Learn about the heart's anatomy, how it functions, blood flow through the heart and lungs, its location, artery appearance, and how it beats.

Learn the facts about heart conditions and stroke so you can increase your confidence in making changes to improve and maintain your health.