heart
Sign in to saveThe heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. The heart and blood vessels together make up the circulatory system. The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. In humans, the heart is approximately the size of a closed fist and is located between the lungs, in the middle compartment of the chest, called the mediastinum.
AI overview
The heart is a muscular organ that pumps blood through your body's blood vessels, forming part of your circulatory system. It delivers oxygen and nutrients to your tissues while removing waste products like carbon dioxide, making it essential for keeping you alive.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Anatomy.Name
- Heart
- Anatomy.Latin
- cor
- Anatomy.Greek
- καρδία (kardía)
- Anatomy.Image2
- 150px
- Anatomy.Caption2
- An illustration of the anterior view of the human heart
- Anatomy.System
- Circulatory
- Anatomy.Artery
- Aorta, pulmonary trunk and right and left pulmonary arteries, right coronary artery, left main coronary artery
- Anatomy.Vein
- Superior vena cava, inferior vena cava, right and left pulmonary veins, great cardiac vein, middle cardiac vein, small cardiac vein, anterior cardiac veins
- Anatomy.Nerve
- Accelerans nerve, vagus nerve
via Wikipedia infobox
Wikidata facts
- Part of
- circulatory system
Article
50 sectionsContents
- Structure
- Location and shape
- Chambers
- Valves
- Right heart
- Left heart
- Wall
- Pericardium
- Coronary circulation
- Nerve supply
- Development
- Physiology
- Blood flow
- Cardiac cycle
- Cardiac output
- Electrical conduction
- Heart rate
- Influences
- Clinical significance
- Diseases
- Channelopathies
- Diagnosis
- Examination
- Heart sounds
- Blood tests
- Electrocardiogram
- Imaging
- Treatment
- Ischemic heart disease
- Valvular heart disease
- Cardiac arrhythmias
- Heart failure
- History
- Ancient
- Pre-modern
- Modern
- Society and culture
- Symbolism
- Cuisine
- Other animals
- Vertebrates
- Double circulatory systems
- Full division
- Fish
- Invertebrates
- Additional images
- Notes
- References
- Bibliography
- External links
The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. The heart and blood vessels together make up the circulatory system. The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. In humans, the heart is approximately the size of a closed fist and is located between the lungs, in the middle compartment of the chest, called the mediastinum.
In humans, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles. Commonly, the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart. In a healthy heart, blood flows one way through the heart due to heart valves, which prevent backflow. 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.