The Cardiovascular System

973 Words2 Pages

One of the most important systems in the body, keeping it alive, is the cardiovascular system. As a part of the circulatory system, the cardiovascular system pumps blood throughout the body through a network of many arteries and veins, providing it with nutrients and oxygen. Also, the cardiovascular fights infections and disease in the body and creates blood cells. Never the less, blood acts as a filtration system for the body and removes waste, cell debris, or bacteria from the bloodstream.

As blood travels through the circulatory system, it is first pumped from the right side of the heart to the lungs through the pulmonary arteries and then separates into arterioles which split into capillaries. Here, the deoxygenated blood receives oxygen diffused in the lungs due to large surface area and travel back through venules and then pulmonary veins to the left side of the heart. From here, the oxygen rich blood is pumped throughout the body in arteries, arterioles, and capillaries, providing the body and cells with nutrients through osmosis. Afterwards, the now deoxygenated blood travels back to the right side of the heart containing deoxygenated blood, through venules and vein to repeat the cycle over again. Also, the heart is nourished by coronary circulation through the Right and Left Main Coronary Arteries.

The body's blood consists of many components, red blood cells, white blood cells, plasma, and platelets. Red blood cells deliver oxygen to your body and remove waste. Without them, your body would slowly die. They contain a protein chemical called hemoglobin, which gives it it’s red color. Also, hemoglobin contains Iron, making oxygen molecules attach to it so as the blood passes through tissue...

... middle of paper ...

...siteCommentsLinkTagsParentheticalEditDelete
"Heart and Circulatory System." KidsHealth - the Web's Most Visited Site about Children's Health. Ed. Yamini Durani. The Nemours Foundation, 01 Jan. 2013. Web. 21 Jan. 2014.
WebsiteCommentsLinkTagsParentheticalEditDelete
"High Blood Pressure (hypertension)." Symptoms. N.p., n.d. Web. 29 Jan. 2014.
WebsiteCommentsLinkTagsParentheticalEditDelete
"Home: Where The Heart Is." The Human Heart: An Online Exploration from The Franklin Institute, Made Possible by Unisys. N.p., n.d. Web. 27 Jan. 2014.
WebsiteCommentsLinkTagsParentheticalEditDelete
"INTRO TO THE CARDIOVASCULAR SYSTEM.wmv." YouTube. YouTube, 01 Jan. 2010. Web. 26 Jan. 2014.
WebsiteCommentsLinkTagsParentheticalEditDelete
Owyoung, Palmer. "What Is the Role of the Spleen & Marrow in the Circulatory System? | EHow." EHow. Demand Media, 30 Oct. 2009. Web. 29 Jan. 2014.

More about The Cardiovascular System

Open Document