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4 giorni fa · 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.
4 giorni fa · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds.
- The Editors of Encyclopaedia Britannica
- In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
- The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
- The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
- The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...
28 giu 2024 · The heart is subdivided into chambers by septa into right and left halves, and a constriction subdivides each half of the organ into two cavities, the upper cavity being called the atrium and the lower the ventricle.
11 giu 2024 · A normal resting heart rate is between 60 and 100 beats per minute. Pulse is an artery's palpable expansion and contraction as blood is ejected from the heart during each heartbeat. It is commonly measured at the wrist's radial artery or the neck's carotid artery.
18 giu 2024 · In the heart, there are two atrioventricular valves responsible for regulating blood flow. In a normal heart, the tricuspid valve allows blood to pass from the right atrium to the right ventricle, whereas the mitral valve permits blood movement from the left atrium to the left ventricle.
5 giorni fa · In adults, a normal heart rate is between 60 and 100 bpm (normocardic), whereas it is higher in children. A heart rate below normal is called " bradycardia " (<60 in adults) and above normal is called " tachycardia " (>100 in adults).
I’m looking to put on a production of “The Normal Heart” by Larry Kramer in June of 2025 with students at UCF. If we get things together soon enough we could even put on a smaller production for Orlando Pride this year (which happens in mid-September).
