KIN 1600 Chapter : Module 11
15 Mar 2019
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The cardiovascular system is the network of organs and vessels through which the blood flows as it carries oxygen and nutrients to all parts of the body. The cardiovascular system consists of the heart, arteries, arterioles (small arteries), veins, venues (small veins), and capillaries (minute blood vessels). Responsible for transporting oxygen, nutrients, hormones, and cellular waste products throughout the body, the cardiovascular system is powered by the body"s hardest- working organ, the heart. The heart a muscular pumping organ located medial to the lungs along the body"s midline in the thoracic region. The heart is muscular, four-chambered pump, roughly the size of your fist. In a 70-year lifetime, an average human heart beats 2. 5 billion times. The human body consists of about 6 quarts of blood. The four chambers work together to circulate blood through the body at all times. The two large upper chambers, atria, receive blood from the rest of the body.
