Circulatory System: Blood, Heart and Blood Vessels
Circulatory System Summary
What is it / main components
Generally speaking, we can say that the circulatory system consists of blood, heart and blood vessels.
The functions performed by the circulation of the blood are indispensable for the balance of our body and vital for the maintenance of life.
It is through the circulatory system that nutrients and oxygen are distributed to every cell in our body, the removal of toxins from tissues, the transport of hormones and the immune defense of our body.
Knowing that blood circulation removes toxins from tissues, carries oxygen and nutrients to cells, transports hormones and defends our bodies, it is easier to understand the role of the heart and blood vessels.
The heart works like a pump, giving blood pressure to circulate throughout our body through blood vessels. The closer to the heart, the more pressure the blood has, however; As the blood vessels branch, their pressure decreases.
After circulating throughout the body and making the necessary changes to balance the body, the blood returns to the heart and lungs, where it will make new exchanges (this time carbon dioxide for oxygen) and then retrace.