Cardiovascular System : An Overview Of Blood, Vessels, And Heart
The cardiovascular system, also known as the circulatory system, consists of the heart, blood, and blood vessels (Mertz, 2004). The cardiovascular system moves oxygenated blood and nutrients through to and removes carbon dioxide and wastes out of the body’s cells. (Miracle of the Human Body, 2010) I will provide an overview how a healthy cardiovascular system does this by first discussing the anatomy of it, in a healthy state, and then the physiology of it, also in a healthy state, this will include how the pulmonary and systemic circuits work. Lastly, I will discuss what happens when the heart is in a diseased state and how it could lead to a heart attack. I will first start with the anatomy of blood.
The Blood Blood is what carries nutrients to and wastes from the body’s cells. The blood also transports hormones to their target locations from the endocrine organs. Blood consists of plasma and the formed elements. Plasma makes up approximately fifty-five percent of whole blood but is the least dense component. The formed elements include the buffy coat and erythrocytes. Leukocytes and platelets are what the buffy coat is composed of and makes up less than one percent of whole blood. The densest components and what constitutes forty-five percent of whole blood are the erythrocytes. Blood is carried to and from cells via blood vessels. (Marieb, 2013)
Blood vessels are made…