Archives March 2021

The blood vessels - arteries and veins

The blood vessels – arteries and veins

The blood vessels are divided into two groups. Arteries and veins. Arteries, whose job it is to transport fresh blood from the heart to the organs, have a thicker vascular wall because the blood flows through here at a relatively high speed. The veins, on the other hand, transport the used blood at a lower speed, which is why they also have a significantly thinner vessel wall. The vessel walls are muscular and elastic. They can expand and contract. In the course of the years, diseases of the blood vessels are usually the first to appear. Debris occludes the arteries and veins, preventing blood flow. This then leads to the organs and tissues no longer being adequately supplied with nutrients and blood and also showing symptoms of illness. Occlusive diseases lead to insufficient blood flow in the organs and in the periphery. This inadequate supply then causes various diseases that affect not only the organs themselves, but also the cardiovascular system.

Heart and circulation

Heart and circulation – a sophisticated system

The circulatory system is a particularly well-designed flow system that consists of the heart and a network of blood vessels. The blood vessels that carry blood to the heart are called veins, and the vessels that carry blood from the heart to the organs are the arteries. Anyone who has ever seen an anatomical picture of a person can perhaps remember that the blood vessels branch more and more and become thinner the further away they are from the heart. Our bloodstream has several tasks to perform in the body. On the one hand, organs are supplied with blood. It’s not just an exchange system, it’s also a logistical marvel. Nutrients, hormones, etc. are brought to the tissue and organs and used by them. Metabolic waste is carried away from the organs and transported to the kidneys and intestines, where they are then excreted. The blood circulation also serves to regulate the body’s temperature. The blood circulation in the skin regulates the amount of heat released through the surface of the body. People who often have cold hands and feet tend to have poor blood circulation.

Heards

The heart septum separates these two halves

The heart is nothing more than a hollow muscular organ. It supplies the body with blood through rhythmic contractions. Its function is similar to that of a pump. Venous, i.e. used blood, is sucked in. In the lungs, the blood is enriched with oxygen and converted into arterial blood. This arterial blood is then pumped into the body to the organs. A healthy heart makes up about 0.5% of the body weight and usually weighs about 300-500 grams.The left and right halves of the heart each consist of a ventricle and an atrium, also known as the atrium. The heart septum separates these two halves. The heart septum is also divided into further parts, these are atrial septum and ventricular septum. In both chambers as well as between the chamber and vein / artery, the openings are closed with heart valves, which function like a reflux valve. They only let the blood flow in one direction at a time.

heart human

Heart, circulation, blood vessels

Our heart is the engine of our body. It tirelessly pumps blood to all parts of the body, thus keeping us in life. Diseases that affect the cardiovascular system often have serious consequences. Worse, they are among the leading causes of death, especially in the western world. Environmental factors, unhealthy diet, stress and other psychological stress can lead to diseases of the heart, circulation and blood vessels. The consequences are devastating. Atherosclerosis, myocardial infarction, pulmonary hypertension, high blood pressure, and strokes threaten life.