Human heart
Human Heart
The Human Heart (pronunciation: /ˈhjuːmən hɑːrt/) is a vital organ in the human body that functions as the primary blood pump.
Etymology
The term "heart" comes from the Old English heorte, akin to the Old High German herza and the Latin cor. The term "human" is derived from the Latin humanus, meaning 'of man' or 'human'.
Anatomy
The human heart is a four-chambered organ, consisting of two atria and two ventricles. It is located in the thoracic cavity, between the lungs and behind the sternum. The heart's outer layer is called the epicardium, the middle layer is the myocardium, and the inner layer is the endocardium.
Function
The primary function of the human heart is to pump blood throughout the body, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes. This process is known as circulation.
Related Terms
- Cardiology: The study of the heart and its functions in health and disease.
- Cardiovascular system: The organ system that the heart is a part of, which also includes the blood vessels.
- Heart disease: A range of conditions that affect the heart, including coronary artery disease, heart failure, and arrhythmias.
- Heart rate: The number of heartbeats per unit of time, usually per minute.
- Blood pressure: The pressure of the circulating blood against the walls of the blood vessels.
External links
- Medical encyclopedia article on Human heart
- Wikipedia's article - Human heart
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