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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...
3 giorni fa · The circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate.
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).
4 giorni fa · Cardiovascular Age (CVA) provides an estimate of how your heart is aging compared to your chronological age, as well as guidance on how you can improve your heart health in the long run. When used in conjunction with other Oura insights, it provides a more comprehensive view of your overall health.*
4 giorni fa · For adults, a normal rate typically falls between 60 to 100 beats per minute (bpm). However, individual variations are common, and factors such as your age, gender, fitness level, and overall health can all influence your specific resting heart rate.
4 giorni fa · According to Mayo Clinic, most healthy adults can expect resting heart rates to range from 60 to 100 beats per minute. But what about Oura Members? Here’s what aggregate data shows across Oura Members of varying age and gender. LEARN MORE: All About Your Resting Heart Rate. Lowest Resting Heart Rate
5 giorni fa · Cardiology is concerned with the normal functionality of the heart and the deviation from a healthy heart. Many disorders involve the heart itself, but some are outside of the heart and in the vascular system. Collectively, the two are jointly termed the cardiovascular system, and diseases of one part tend to affect the other.
