HLTC22H3 Chapter 6: Chapter 6(1).docx

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26 Apr 2012
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Chapter 6- aging of the internal organ systems. The cardiovascular system is the body"s main transportation system and it send supplies like fluids, nutrients, hormones, oxygen, and antibodies to tissues in the body while at the same time removing waste products like carbon dioxide and hydrogen ions. Cardiovascular system composed of the heart, blood vessels, and blood. Blood is highly complex fluid composed of water, red and white blood cells, and platelets, as well as nutrients like fat globules, carbohydrates, and proteins. Also carries electrolytes to help maintain the acid/base balance, and a host of other chemicals, including hormones, neurotransmitters, and various other peptides necessary to regulate homeostasis, cognition, movement, and every other function of the body. Heart is the center of the circulatory system and is located behind the chest wall, in a slightly canted position, w/ the midsection somewhat to the left of the sternum, or breastbone. Enclosed in a fibrous sac called the pericardium.