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Vor 3 Tagen · Learn about the structure, function, and diagram of the human heart, a four-chambered double pump that circulates blood through the body. Explore the history, evolution, and diseases of the heart, and watch videos of its electrical conduction and sounds.
- Heart Valve
Other articles where heart valve is discussed:...
- Ventricle
Ventricle, muscular chamber that pumps blood out of the...
- Coronary Heart Disease
coronary heart disease, disease characterized by an...
- Atrium
Atrium, in vertebrates and the higher invertebrates, heart...
- Chambers
Other articles where chamber is discussed: cardiovascular...
- Heart Sounds
heart sound, audible rhythmic vibrations in the heart,...
- Heart Murmur
heart murmur, condition characterized by prolonged noises...
- Sinoatrial
Other articles where sinoatrial node is discussed: mammal:...
- Heart Valve
The heart is a muscular organ found in most animals. This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs.
- Left and Right Sides
- Diastole, Systole, and Blood Pressure
- Gas Exchange
- Pulse
- GeneratedCaptionsTabForHeroSec
The left and right sides of the heart work in unison. The atria and ventricles contract and relax in turn, producing a rhythmic heartbeat. Right side The right side of the heart receives deoxygenated blood and sends it to the lungs. 1. The right atrium receives deoxygenated blood from the body through veins called the superior and inferior vena cav...
Each heartbeat has two parts: Diastole:The ventricles relax and fill with blood as the atria contract, emptying all blood into the ventricles. Systole:The ventricles contract and pump blood out of the heart as the atria relax, filling with blood again. When a person takes their blood pressure, the machine will give a high and a low numberTrusted So...
When blood travels through the pulmonary artery to the lungs, it passes through tiny capillaries that connect on the surface of the lung’s air sacs, called the alveoli. The body’s cells need oxygen to function, and they produce carbon dioxide as a waste product. The heart enables the body to eliminate the unwanted carbon dioxide. Oxygen enters the ...
A person can feel their pulse at points where arteries pass close to the skin’s surface, such as on the wrist or neck. The pulse is the same as the heart rate. When you feel your pulse, you feel the rush of blood as the heart pumps it through the body. A healthy pulse is usually 60–100 bpmTrusted Source, and what is normal can vary from person to p...
Learn about the structure, function, and blood flow of the human heart, as well as the valves, electrical system, and blood pressure. Find out how the heart delivers oxygen and nutrients to the body and eliminates waste products.
The heart is the body's engine room, responsible for pumping life-sustaining blood via a 60,000-mile-long (97,000-kilometer-long) network of vessels. The organ works ceaselessly,...
4. Okt. 2019 · The heart is a muscular organ that pumps blood throughout the body. It is located in the middle cavity of the chest, between the lungs. In most people, the heart is located on the left side of the chest, beneath the breastbone. The heart is composed of smooth muscle.
3. Nov. 2023 · The heart is a muscular organ that pumps blood around the body by circulating it through the circulatory/vascular system. It is found in the middle mediastinum, wrapped in a two-layered serous sac called the pericardium.
Your heart is the main organ of your cardiovascular system, a network of blood vessels that pumps blood throughout your body.