the heart
The heart is one of the members of the human body muscle, which is responsible for pumping blood and delivery to the places that feed, and is therefore a very important and effective part of the circulatory system in humans as well as the importance of the human body as a single unit. The heart gives an amount of about five liters One minute, and this quantity can increase and multiply more than three times, especially when the human performance of various exercises, these activities make him need very great effort.
Heart muscle location
The heart is located in the middle of the chest almost and may be closer to the left side of the body, but it does not occur as some think in the left part of the human body, where the human heart is in the human upper part, and be directly behind the rib cage, Human, as the heart can be located as at the top above the stomach, there are some people whose heart is located in the same coordinates but it is closer to the right side of the human body, these are very few cases.
Heart functions
The heart always pumps blood, which pumps the blood coming from the lungs, which is usually loaded with oxygen gas, which enters the human body through breathing to all parts of the human body. It also pumps the blood that carries carbon dioxide into the lungs of the human body. They expel these gases from the body. The heart does not transfer oxygen only through the blood, it also transfers all nutrients, and all the elements and substances that the body needs. The heart delivers all these substances to all the different organs of the human body, specifically to each cell that needs these substances and components to continue to live and perform all the functions that need to grow. The heart also works to get all the waste to the places it takes out of the body, such as transferring urine to the kidneys to get it out through the bladder.
Heart size
The mass of the heart is roughly the same as in a person whose body mass reaches about 70 kilograms around 350 grams. The heart does not work separately from the blood vessels, it is the circulatory system in the human body, and the blood vessels are through which the blood through them, which are multiple and varied vessels, varied classification and forms, and the estimated length of about 140 thousand square kilometers .