After Leaving The Right Ventricle Blood Flows Into The Overview of the Human Circulatory System

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Overview of the Human Circulatory System

We rely on our circulatory system to carry nutrients and oxygen to our blood cells and to carry away waste and carbon dioxide. This important complex in our body consists of heart, blood and blood vessels. Understanding the basics of the circulatory system is an important step toward learning how our body works.

First, the heart is a muscular organ that basically acts as a pump. It has four chambers: right atrium and ventricle and left atrium and ventricle. There are four valves separating the chambers to keep the blood flowing in the right direction. The right side of the heart is responsible for taking deoxygenated blood from the body and pumping it to the lungs. The left side receives this oxygen-rich blood from the lungs and travels to the body to continue the circuit.

There is a special group of cells that produce electrical signals that tell the heart when to beat. Because this organ normally beats 72 times each minute, these cells send electrical impulses more than once per second. The original source of electrical signaling is called the sinoatrial node. This first signal causes both the right and left atria to beat simultaneously. Next, it travels to the atrioventricular node, which sends pulses to the left and right ventricles, so they beat simultaneously. This delay in chamber pumps causes the heart to beat a whump-whump voice

Further, blood is the general name for the substance that carries nutrients and waste around the body. It is mainly composed of red blood cells, which use hemoglobin to carry oxygen to the cells. Blood is also made up of white blood cells, which work to protect the body from disease. T and B lymphocytes also reside in the blood and are responsible for immunity. Platelets work to close wounds, and plasma is made up of proteins that, among other things, work to stabilize blood volume.

The heart pumps blood through the blood vessels. There are two types of blood vessels and veins. Arteries carry oxygenated blood from the heart and throughout the body. Veins serve as a pathway for oxygenated blood to return to the heart so it can be re-oxygenated. There are three main types of veins. Superficial veins drain into communicating veins, which drain their contents into deep veins. Deep veins lie deep in the muscles and carry more than 80% of the blood back to the heart.

Just like the heart, veins depend on valves to keep blood flowing in the right direction. However, it is only when these valves fail that we develop venous diseases like varicose veins. Along with this, small, superficial veins can eventually lose the ability to keep blood flowing properly, causing old blood to pool. It can also be ugly and painful. Thus, many people choose to fix their vein problems with things like sclerotherapy and laser ablation.

If you have spider veins or varicose veins, you shouldn’t let them stop you from showing off your legs. For more information about varicose and spider vein treatment options, see Dr. Zimet Vein and Dermatology Vein Specialist today.

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