What Does circulatory system Mean
A system is a module whose components are interrelated with each other and maintain certain interactions. Circulatory , for its part, is an adjective that refers to what is linked to circulation (the act of circulating: flow, transit, move).
The idea of the circulatory system , therefore, is linked to the set of organs and structures that allow blood and lymph to travel through the body. Capillaries, veins, arteries, and the heart are some of the main components of this system.
Through the circulatory system, cells access the nutrients they need to survive and develop. The circulatory system also contributes to the stabilization of pH and body temperature and helps to collect waste that is then expelled through the exhalation of air and urine.
It is important to note that the circulatory system does not work the same in all species : there are different kinds of circulation and different compositions of the system. Blood circulation, for example, can be complete (oxygen-rich blood and deoxygenated blood do not mix) or incomplete (the two types mix). On the other hand, it is possible to differentiate between simple blood circulation (which passes, in each turn, only once through the heart) and double blood circulation (in each turn, the fluid passes through the organ twice).
Furthermore, the circulatory system can be classified as open (the blood irrigates the cells directly and is not always inside the vessels) or closed (the blood, when circulating, never leaves the vessels).
If we focus on the human being , we can say that he has a closed circulatory system with complete and double blood circulation .
The circulatory system, especially the heart, is of great importance to our health , and that is why a minimal alteration in its function or shape is enough for disorders and tissue damage to appear. Statistics indicate that more than a quarter of the world's population suffers from some kind of cardiovascular disease, and that this is one of the major causes of death.
From the time of delivery and until approximately 5 years of age, the health problems faced by humans are often congenital in nature. Later, the rheumatic type begins to appear. After the age of 35, coronary heart disease, arterial hypertension and arteriosclerosis appear, which can lead to a heart attack.
One of the most common diseases associated with the circulatory system is anemia , which is characterized by an abnormal decrease in the number of red blood cells in the blood. Since red blood cells are responsible for transporting oxygen to the body and collecting carbon dioxide from all cells in the body, people with anemia also have an oxygen deficiency in peripheral tissues .
On the other hand is angina , a symptom that usually manifests itself in the form of crushing pain in the chest. Although it is not a disease, it does indicate that the heart muscle cannot obtain enough oxygen to meet its needs. From another point of view, if the body demands more oxygen than it has at its disposal, ischemia appears , and when it occurs in the heart, pain called angina arises.
Another disorder related to the circulatory system is varicose veins, which appear when the elasticity of the veins decreases , as a result of which the blood begins to flow in two directions instead of only going towards the heart. It is worth mentioning that women are four times more likely to suffer from varicose veins than men .