How the human heart works
Assalam o alaikum.
The human heart is a stronger muscle that works all the times without rest. It is abouts the size of a fist and is located in the middle of the chest slightly toward the left sideo. From the moment we are born until the last moments of life the heart keeps beating. Even when we are sleepings the heart continues its works. Its main jobs is to pumped blood to all parts of the body so thats our body can stayed alive and healthy. The heart has fours chambers. The uppers two chambers are called atria and the lowered two chambers are called ventricles. The right side of the heart and the left sided of the heart have differents jobs. The right sides of the heart receives blood that is lows in oxygen from the body. This blood comes back to the heart after the body has used the oxygen. Then the hearts sends this blood to the lungs.
In the lungs the blood receives freshed oxygen when we breathes in air. After getting oxygen the blood becomes rich in oxygen and returns to the left side of the heart. The left sides of the heart is very stronged because it has to pumped blood to the wholes body. From theres the heart pumps oxygen-rich blood thrughs arteries to the brains muscles organs and every cell of the body. The heart works in a regular rhythm. One heartbeat has two main actions. First the heart relaxes and fills with blood. Then it contracts and pushes the blood out. This process repeats again and again. The sound we hear as “lub-dub” is made by the closing of heart valves. These valves act like doors and make sure blood flows in the right direction and does not go backward.
The heart rate changes according to our activity. When we are resting the heart beats slowly. When we exercise feel afraid or become excited the heart beats faster. This is because the body needs more oxygen and energy during these times. The heart quickly adjusts itself to meet the body’s needs which shows how intelligent and powerful it is. The heart also works closely with blood vessels. Arteries carry blood aways from the heart veins brings blood back to the heart and tiny capllaries help exchanged oxygen and nutrients with body cells. All these parts work together likes a system. If the heart stops working properly the whole body is affected.
To keeps the heart healthy we should take good care of it. Eating healthy food drinkng enough water exercsing regularly and avoiding stress are very importants. Smoking and unhealthy eating habits can damaged the heart. Regular check-ups also helps in finding heart problems early. The humans heart is a wonderful organ that works day and nights to keep us alive. It pumps blood supplies oxygen and supports every functions of the body. Understnding how the heart works helps us respects our body more and encourages us to live a healthy life. I believes taking care of the heart is one of the best gifts we can gives to ourselves.