1. Human Body Project Cardiovascular System By Matthew Cruz Michael Kim Gabriel Ochoa

2. Structure The cardiovascular system is made up of the: Heart Blood Vessels Blood

3. Structure In the cardiovascular system, the heart is located in the center of the chest area, the blood vessels span through the body, and blood is constantly pumped through the blood vessels. The heart is about the size of a human fist and has multiple chambers. There are three types of blood vessels: Arteries, Veins, and Capillaries. The blood is around 7% of a human’s total weight.

4. Functions The main role of the cardiovascular system is to send oxygen to and remove the waste from all the tissues in the body. Since the system is consisted of mostly blood, the blood is most responsible for moving the oxygen, nutrients, and metabolic waste, this is done by the use of blood vessels.

5. Functions The Heart The heart contains four chambers: the right atrium, the right ventricle, the left atrium, and the left ventricle. The heart’s main function is to pump oxygenized blood through the body and blood low on oxygen to the lungs. The pacemaker in the upper right atrium, called the sinoatrial node, uses electrical signals trigger heart contractions that will sustain the flow of blood.

6. Functions Blood Vessels Blood With oxygen Without oxygen The heart pumps the blood through these, which span through the entire body. Blood with oxygen goes through the capillaries and arteries, but blood without oxygen goes through the veins. The blood carries oxygen, nutrients, and metabolic waste throughout the entire body.

7. Common Disease Stroke A stroke occurs when blood flow to the brain is disrupted (ischemic stroke) or a blood vessel in the brain bursts (hemorrhagic stroke). Strokes can affect consciousness, sensations, and movement for a minimum of 24 hours. A stroke is usually treated by continuously monitoring any complications. Restoring blood flow to the area or stopping the bleeding are ways to attempt to cure a stroke.

8. Facts Average weight of the heart in males and females is 300 - 350 g and 250 - 300 g respectively. Size of the heart is equal to that of the fist of human hand. The human heart is covered by a layer called pericardium, which is actually a double-walled sac. The heart is composed of three layers: the endocardium (innermost layer), myocardium (middle layer), and the visceral layer (uppermost layer) The heart, which is an important component of the cardiovascular system, beats 72 times in a single minute, and thus produces approximately 2.5 billion beats in the lifetime of a person. The total length of all the blood vessels in the human body is approximately 60,000 miles. This length of the blood vessels is equivalent to twice the circumference of the earth.

9. Facts Out of the total volume of blood plasma, 92% is water and only 8% is that of the plasma proteins. Hemoglobin, a protein with iron as its main component is the forms the RBCs and enables them in the transportation of oxygen. Blood is actually a specialized form of connective tissues and is produced inside the bones. Blood is composed of blood cells and these cells are suspended in a liquid known as blood plasma There are 3 types of blood vessels: the arteries, veins and capillaries. Arteries perform the work of taking blood away from the heart while the veins transport it towards the heart. Capillaries are responsible for the exchange of chemicals and water that takes place between tissues and blood.

10. Bibliography "Cardiovascular System." - Information from Bupa on Cardiovascular System. Bupa's Health Information Team, Feb. 2011. Web. 28 Apr. 2012..http://www.bupa.co.uk/individuals/health- information/directory/c/the-cardiovascular-system "Cardiovascular System Information." Body Guide - Powered by Adam. Walgreens, 2001. Web. 28 Apr. 2012.. Nakate, Shashank. "Cardiovascular System Facts." Buzzle. Web. 27 Apr. 2012..ashank. "Cardiovascular System Facts." Buzzle. Web. 27 Apr. 2012. <http://www Schoenstadt, Arthur. "Stroke." Stroke. EMedTV. Web. 28 Apr. 2012..roke.html>. Johnson, George B., and Peter H. Raven. Holt Biology. Orlando: Holt, Rinehart and Winston, 2006. Print. Johnson, George B., and Peter H. Raven. Holt Biolog