What ensures the continuity of blood flow through the vessels? Continuity and causes of blood flow

The question of what ensures the continuity of blood flow through the vessels is quite interesting. After all, this is the substance of which each person is composed. We just know that this is a fact, but we rarely think about how the blood moves inside us. And it would not be superfluous to know. So, it's worth to tell about the most interesting moments concerning this topic.

Definition

I would like to start with a term that has long been designated as a process, such as blood circulation - the movement of blood through the vessels. Hemodynamics - this is the word. And this process arises, as a consequence of the difference in the so-called hydrostatic pressure in different parts of our circulatory system. How does this happen? In simple terms, the blood begins its movement from the area where there is high pressure in the one where it is lower. Everything is logical. The whole process depends on how high is the resistance to the blood current of its own viscosity and the walls of all the vessels. Often, the notorious hemodynamics is disturbed, and usually this is due to injuries, burns and hypothermia. The norm or violation of the volume of blood passing in a minute is determined.

More about blood circulation

So, now it is necessary to talk in more detail about what ensures the continuity of the blood flow through the vessels. This substance moves through the body and the pulmonary circle. They are more known to us, both large and small circles of blood circulation. But in order to begin to understand their specifics, it is necessary to understand how the main "mechanism" of man, his engine works. Namely - the heart.

This is the most important organ, which ensures the movement of blood through the vessels. Continuity of blood flow is caused by constant contractions of the heart. Because it is the body regulating hemodynamics. The heart of a man is 4-chambered. In the left part there is arterial blood, and in the right part, respectively, venous. They do not interfere in the human heart for anything, since they are separated by partitions. What else is worth knowing? The fact that the arterial blood contains oxygen, and it comes from the heart. The venous moves to the opposite. And this blood contains carbon dioxide.

About functions

Talking about what ensures the continuity of blood flow through the vessels, we must also say about the functions of hemodynamics. Through a small circle it turns out to provide a normal process of gas exchange occurring in the lungs. Because venous blood is supplied there, which supplies carbon dioxide. There it is saturated with oxygen. And, changing direction, it returns to the heart. But only already being arterial. Representing this process, you can answer the most important question. And it will be as simple as possible. Breathing is what keeps blood flowing through the blood vessels. Continuity of blood flow is due to the fact that we are constantly breathing. We all know that if you stop breathing, your heart rate increases, and then, if you do not consume the air at all, a fatal outcome comes . Blood ceases to flow to the lungs, as the body no longer receives oxygen. Accordingly, there is no need to supply carbon dioxide. And the heart with blood ceases to fulfill its main function.

Vessels

They also need to be told about them. Continuity and causes of blood flow are a very multifaceted topic. And the vessels are an integral part of it. So, there are cushioning, resistive, exchange and capacitive. What are they? The first of these are large arteries. The aorta also belongs to the cushioning vessels. They have special walls, characterized by elasticity - and it is thanks to this quality that continuous hemodynamics is ensured.

Resistive provide high pressure in large vessels, as well as regulate the circulatory process in capillaries, which, incidentally, are called exchange. They differ in thin walls. Provide the process of gas exchange throughout the vascular system. And it is thanks to the capillaries that all waste materials are removed from the body.

And, of course, capacitive blood vessels. The movement of blood through the vessels can not be imagined without them. They got their name because they contain the overwhelming volume of all the blood that is in the person. Namely - 75 percent.

Traveling speed

How quickly this fluid moves through our vessels is also important to know, especially by studying the question of what ensures the continuity of blood flow through the vessels. So, in the aorta, the speed is about 500 milliliters per second. In the arteries - 0.5 ml for the same time. How speed is calculated is easy to understand - scientists have long ago deduced an algorithm for the total clearance. However, it is not necessary to talk about this.

Blood in the veins flows too fast enough - in a second 200 milliliters. By the way, here the movement is not due to pressure. It is low in the veins. Venous blood moves as a result of the force exerted on the walls of the vessels by the muscle tissues.

Violations

Unfortunately, diseases associated with blood circulation, overtake many people. And they are often the cause of early deaths. Stroke, heart attack, hypertension - all these names are well known to us. And they are connected with blood circulation. In vain, many do not pay attention to their health. Indeed, prevention, in fact, is extremely simple and does not require large financial costs. Although some may come hard. Because you need to quit smoking altogether. It's no wonder why so many people with cardiovascular diseases today - it's only worth looking at the number of smokers.

Also, use alcohol in moderate amounts. Of course, it's better to do without it. Physical loads will also not be superfluous. You do not need to go to the gym every day and spend three hours there for training - 15-20 minutes a day.

And, of course, you need to monitor your diet. Do not pass and get involved in too fatty food, otherwise because of this, cholesterol plaques are formed on the walls of the vessels, the lumen of which narrows and, as a consequence, the disturbed blood circulation. It is better to replace harmful food with fruits, vegetables, citrus, fermented milk products, mineral water. That will help.