The cardiovascular system is the one of the most important body system. The primary organ of this system is the heart which plays a vital role in the continuity of life. The cardiovascular system is needed for us to continue on our activities by pumping blood throughout the body. Understanding this crucial system will enable us to appreciate more the heart and all the organs and structures related to it.
Overview of the Cardiovascular System
The cardiovascular system mainly consists of the heart which is a powerful pumping organ that ejects blood throughout the body. The heart pumps the blood through a closed system of blood vessels. These blood vessels include the following structures.
- Credit: http://biology.about.com/od/anatomy/ss/artery.htmArteries – this blood vessel carries oxygenated blood away from the heart. All arteries carry oxygenated blood except for the pulmonary and umbilical arteries. It has a higher level of pressure compared to other blood vessels since arterial blood needs to travel to the most distal part of the body. There are many types of arteries which include the pulmonary arteries, aorta, arterioles, and systemic arteries.
- Credit: http://www.nazveincenter.com/vein.htmlVeins – this blood vessel carries blood toward the heart. The veins mainly carry non-oxygenated blood with a few exceptions such as the pulmonary and umbilical veins. The vein differs from the arteries in structure and position. The veins have lower pressure compared to the arteries and are located more superficially. The veins are less muscular than the arteries and contain valves that facilitate easier travel of blood towards the heart and help to avoid backflow.
- Credit: http://www.biosbcc.net/doohan/sample/htm/COandMAPhtm.htmCapillaries – this is the smallest blood vessel of the body and is part of the microcirculation of the body. Capillaries are the site where the veins and arteries are connected. Because of this structure, blood and adjacent tissues are able to exchange fluids, gases, nutrients, and waste materials.
- Credit: http://www.daviddarling.info/encyclopedia/L/lymphatic_vessel.htmlLymphatic vessels – this blood vessel is also part of the lymphatic system that carries lymph throughout the body. The lymphatic vessels serve as a reservoir for plasma and other substances that had escaped the vascular system. Eventually, these trapped substances will be drain back to the circulatory system.
Main Components of the Cardiovascular SystemCredit: http://www.buzzle.com/articles/cardiovascular-system-facts.html
The cardiovascular System is chiefly composed of the blood, blood vessels, and heart. It is further divided into two systems which are the pulmonary circulation and the systemic circulation. On average, an adult have six quarts of blood which consists of the red blood cells, white blood cells, platelets, and plasma.
Brief Information about the HeartCredit: http://questgarden.com/86/46/4/090903143836/process.htm
The heart is made up of four chambers which include the left and right ventricles and the left and right atriums. The right atrium and ventricle collects unoxygenated blood and eject is to the lungs to be loaded with oxygen. On the other hand, the left ventricles and atrium ejects oxygenated blood to the systemic circulation.
Summary of the Cardiovascular System
The Cardiovascular system is truly an amazing set of organs and tissues. It has many components that work together to deliver effective circulation of the blood.
This article has given you general information about heart and related structures. The cardiovascular system should be given more attention to know more about how to take care of it.