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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.
- kardía (καρδία)
- Circulatory
- cor
16 mag 2024 · 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...
3 mag 2024 · The normal resting heart rate varies by age. In adults, any number between 60 and 100 beats per minute (bpm) is considered a good resting heart rate. Babies and young children have higher resting heart rates than older kids, teens, and adults.
13 mag 2024 · Your resting heart rate is the heart pumping the number of times needed to deliver blood to the body when you’re not exercising. A normal resting heart rate is between 60 and 100 beats per minute if you are sitting or lying and you are calm and feeling well.
15 mag 2024 · Heart rate, the number of times the ventricles of the heart contract and relax (that is, beat) per minute or other unit of time. In human beings, the normal resting heart rate among adults ranges from 60 to 100 beats per minute (BPM), whereas the normal resting heart rate for children is higher and.
13 mag 2024 · Normal sinus rhythm (NSR) is another name for the normal heart rhythm. Learn what it means if sinus rhythm is too slow (bradycardia) or too fast (tachycardia).
26 apr 2024 · Regularly checking your resting heart rate can help track your fitness levels and may allow you to recognize possible health issues. Understanding what your resting heart rate should be by age and gender, and how to measure it, will allow you to take action and prioritize your health and fitness.
