Blood Circulation System in Humans The main function of the circulatory system is to circulate oxygenated blood throughout the body and to carry oxygenated blood and substances that are not needed by the body to be disposed of through sewers such as the lungs and intestines. The human circulatory system has 3 important components, namely the heart, blood and blood vessels.

1. Heart

The heart is one of the vital organs in the human body. The heart is located in the chest cavity slightly to the left. The heart is protected by the pericardium which forms a membrane that surrounds the heart.

The heart has 4 chambers that have an important function in helping the blood circulation system in humans. The four rooms consist of, among others, the right ventricle and the left ventricle and the right atrium and the left atrium.

The left ventricle has a harder task because it has to pump more strongly than the right ventricle, the left ventricle must pump blood with strong pressure so that blood can flow throughout the body. The right ventricle is responsible for pumping blood from the heart to the lungs.

Blood that contains high levels of carbon dioxide will enter the right side of the heart, starting from the right atrium and will pass through the tricuspid septum so that the blood will reach the right ventricle.

In the left atrium, blood will flow into the left ventricle by passing the bicuspid septum. The heart will contract to close the bicuspid septum and open the aortic septum which makes it easier for blood to enter the oarta. In the oart there are branches that will carry blood to the left coronary artery and the right coronary artery. Coronary arteries are arteries that nourish the heart. The coronary arteries will go to the arteriolar arteries to bring blood to the capillaries and the blood will go to the veins with the help of venules.

The heart has a different beat for each person. This depends on the age, the materials consumed and the activities being carried out. The older a person gets, the lower the heart rate, 60-70 beats per minute. This state is similar to the state when a person is resting. The heart rate will weaken, this is an attempt to rest the body.

Blood in the human body can flow due to pumping from the left ventricle with the help of heart contractions. When the heart contracts, blood will flow at a very high speed, so that blood can flow throughout the body. Read: Circulatory System in Humans

2. Blood

Blood is a medium that can drain and deliver various contents and substances needed by the body. Blood will flow throughout the body carrying oxygen and substances needed by the body. After all organs get what they need, the blood will rebind carbon dioxide and substances that are no longer needed by the body to be removed from the body.

3. Blood vessels
Blood vessels are a means of transportation, so with blood vessels, blood can flow and circulate substances that the body needs and get rid of substances that are no longer needed by the body. Without blood vessels, blood cannot do its job properly. Read: Blood Circulation and Heart

That’s an explanation of the blood circulation system in humans that I can convey, hopefully it will be useful.