The Circulatory System - Structure and Function - Edubirdie

University:
Michigan State University
Course:
ANTR 211 | Human Tissues and Cells for Medical Illustrators
Academic year:

2019
Views:

190

Pages:

1
Author:

behend6abs

The Circulatory System - Structure and Function Blood circlulates through the heart, which pumps it to the lungs and the rest of the body. When blood circulates from the heart to the lungs to pick up oxygen, it is called pulmonary circulation. When blood circulates to the rest of the body, it is called systemic circulation. The blood picks up oxygen inhaled into the lungs and delivers it through blood vessels, called arteries, to the rest of the body. The lub dub heart beat is the sound of the heart’s valves opening and closing as the heart muscle contracts and squeezes the blood on its way. Blood leaving the heart to circulate through the body is arterial blood. It is full of oxygen that will be delivered through arteries to the rest of the body. The largest artery leaving the heart is called the aorta. Blood coming back to the heart from the body is called venous blood. It has dropped off all its oxygen and is carrying carbon dioxide that will be brought back to the lungs to be exhaled. It enters the heart through two large veins called the vena cavas.

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