The Cardiovascular System: Difference between revisions
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== Blood and Blood Vessels == | == Blood and Blood Vessels == | ||
'''Arteries''' innitiate from the heart and carry blood to organs and tissues where oyxgen and nutrients are need. Therefore, they carry blood which is rich in these components. The arteries pump blood by narrowing as the heart relaxes, so that the exerted force pushed the blood forward. Thick walls, muscular (see [[Cardiac_muscle|cardiac muscle]]), and elastic layers ensure that the strain due to the blood flow and the contraction of the heart does not damage the walls, which on average are only 1mm thick. | |||
===== Veins ===== | ===== Veins ===== | ||
Revision as of 00:46, 2 December 2011
The Cardiovascular System (also called circulatory system) circulates the blood around the body in order to supply all parts with required nutrients and oxygen and to remove waste products such as carbon dioxide.[1]
Blood and Blood Vessels
Arteries innitiate from the heart and carry blood to organs and tissues where oyxgen and nutrients are need. Therefore, they carry blood which is rich in these components. The arteries pump blood by narrowing as the heart relaxes, so that the exerted force pushed the blood forward. Thick walls, muscular (see cardiac muscle), and elastic layers ensure that the strain due to the blood flow and the contraction of the heart does not damage the walls, which on average are only 1mm thick.
Veins
Capillaries
Heart Structure
Coronary Heart Disease
References
- ↑ Parker S. (2007) The Human Body Book, 1st edition, London: Dorling Kindersley Limited.