The heart

The heart is one of the most important organs we have within our body. It is located inside our chest which is the chest and is located between the two lungs. Its size is approximately like our cuff and usually weighs about 300 grams, that of an adult can reach up to 450 g.

The heart has a very important function and is to continuously pump blood to every corner of our body and to do so we have to imagine that it has a great strength and durability. That is why we must take great care of its condition, with moderate exercise and a good diet.

What is the heart?

It is a hollow fist-sized, pear-shaped organ that is located between the two lungs, inside the rib cage. Its position is somewhat tilted to the left with the pointed part down.

The main function of the heart is to pump blood continuously into every corner of our body. In this blood shipment it will do it through a contraction movement and will be charged with clean oxygen received from the lungs. This blood will travel through ducts called arteries and distribute this oxygen throughout cells, tissues, and organs.

Because blood runs out of oxygen, it has to go back to the lungs to charge oxygen. It will reach the lungs and clean it first, as it comes loaded with waste, and it will fill with oxygen again to pass through the heart and start its cycle again.

As an annotation it is necessary to know that the heart contracts between fifty and a hundred times per minute when we are at rest, without exercising. That’s up to almost a hundred thousand times a day. And he pumped around 10,000 litres of blood every day all over the body.We have in the body about 5 liters of bloodand they will be the ones that are constantly circulating from the heart into our body. So many times the blood will circulate through our heart that those 5 litres translate into those 10,000 litres a day.

Its functions in more detail

With this drawing that we show you it will be much easier to know how our heart works step by step.

  1. The red colored part is the blood that will be loaded with oxygen. Therefore, blood coming from the lungs with its oxygen will enter the heart through the right and left pulmonary vein.
  2. They will enter the left atrium and move into the left ventricle, from there it will be driven through the aorta so that blood is distributed throughout all corners of the body.
  3. Blood on its return will return without oxygen through the superior vena cava and inferior vena cava entering through the right atrium, passing into the right ventricle and leaving distributed through the left pulmonary artery and right pulmonary artery.
  4. This blood returns to the lungs to charge oxygen and start the same cycle again.

Curiosities of the heart

El corazón

  • The heart emits a sound when it beats, something like “ducta-duc”.
  • As we have said, the heart can beat between 50 and 100 beats per minute and at each beat drives 80 milliliters of blood. When we exercise the heart beats much faster and blood runs much faster throughout the body.
  • The heart beats on a large scale up to 30 million times a year.
  • The first heart transplant was done on December 3, 1967 by South African surgeon Christian Barnard.
  • The transplanted heart that has survived the most has been 22 years, 10 months and 24 days.
  • The left lung is much smaller than the rightone. This is because it leaves room for the heart.