Blood flows through your heart, lungs and body in a series of steps. After delivering oxygen and nutrients to all your organs and tissues, your blood enters your heart and flows to your lungs to gain oxygen and get rid of waste. It then flows back to your heart, which pumps the refreshed blood out through your aorta to nourish your body again.

In a healthy heart, blood flows one way through the heart due to heart valves, which prevent backflow. [ 4 ] . The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium. [ 8 ]

2024年1月26日 · Your heart’s main function is to move blood throughout your body. Blood brings oxygen and nutrients to your cells. It also takes away carbon dioxide and other waste so other organs can dispose of them. Your heart also: Controls the rhythm and speed of your heart rate. Maintains your blood pressure.

2024年4月13日 · But, what is the path of blood through the heart? The short answer is that deoxygenated blood from the body enters the right atrium of the heart and the right ventricle pumps it to the lungs. The oxygenated blood returns to the heart, entering the left atrium, while the left ventricle pumps it to the body.

2025年1月8日 · The seven main functions of the heart include pumping blood throughout the body, delivering oxygen to tissues, removing waste from tissues, controlling heart rate, maintaining blood pressure, supporting other organs, and pumping hormones and other vital substances to different parts of the body.

The heart is a hollow, muscular organ that pumps oxygenated blood throughout the body and deoxygenated blood to the lungs. This key circulatory system structure is comprised of four chambers. One chamber on the right receives blood with waste (from the body) and another chamber pumps it out toward the lungs where the waste is exhaled.

2024年6月11日 · Understanding its basic anatomy is crucial to understanding how it functions. This article provides a comprehensive look at the heart's structure with a detailed, labeled diagram and realistic photos, guiding you through each part and its role in the circulatory system.

2024年9月4日 · Some blood vessels (veins) return blood to your heart, while others (arteries) carry blood away from your heart. Your blood vessels work with your heart and lungs to continuously move blood through your body. Here’s how: Your heart’s right ventricle sends blood that’s low in oxygen (oxygen-poor blood) to your lungs.

2023年6月6日 · The heart provides the body’s organs and tissues with a constant supply of blood – and with it vital oxygen and nutrients. You can think of the heart as a central pump that keeps the blood circulating around the body.

2022年3月24日 · Explore some basic facts about keeping your heart healthy. Last updated on March 24, 2022. Learn about your heart’s anatomy, blood flow, electrical system and heartbeat, and heart conditions and diseases.