give me detailed information about Heart best answer wil mark as brainliest.
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Heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks. In fishes the heart is a folded tube, with three or four enlarged areas that correspond to the chambers in the mammalian heart. In animals with lungs—amphibians, reptiles, birds, and mammals—the heart shows various stages of evolution from a single to a double pump that circulates blood (1) to the lungs and (2) to the body as a whole.
heart: basic anatomy
The heart, located between the lungs, powers the circulatory system.
circulatory system: General features of circulation
…position, is usually called a heart. In vertebrates blood and lymph (the circulating fluids) have an essential role in maintaining homeostasis…
In humans and other mammals and in birds, the heart is a four-chambered double pump that is the centre of the circulatory system. In humans it is situated between the two lungs and slightly to the left of centre, behind the breastbone; it rests on the diaphragm, the muscular partition between the chest and the abdominal cavity.
Human heart beating.
Human heart beating.
Encyclopædia Britannica, Inc.
The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and another layer, the endocardium, lines the inside. The heart cavity is divided down the middle into a right and a left heart, which in turn are subdivided into two chambers. The upper chamber is called an atrium (or auricle), and the lower chamber is called a ventricle. The two atria act as receiving chambers for blood entering the heart; the more muscular ventricles pump the blood out of the heart.
Heart is the pumping organ of our body. It's function is to provide the oxyginated blood to the body and supply deoxiginated blood to the lungs from the body for the filtration of deoxiginated blood to oxiginated blood . In the heart, a structure is found called Valves, which helps in to stop the reverse flow of blood. In Heart we have four chamber left auricle and ventricle and right auricle and ventricle . The blood enters to the right chambers of the heart from pulmonary artery which carried doxyginated blood from body by veins ( which carry blood from the body to the heart) and goes to the body by a pressure from pulmonary veins and provide oxiginated blood to the different parts of our body by the arteries ( which provides blood to the body from the heart). The separation of oxiginated and deoxyginated blood is necessary to maintain the body temperature and energy.