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Cardiovascular System - Human Veins, Arteries, Heart. [Continued from above] . . . The Heart The heart is a muscular pumping organ located medial to the lungs along the body’s midline in the thoracic region. The bottom tip of the heart, known as its apex, is turned to the left, so that about 2/3 of the heart is located on the body’s left side with the other 1/3 on right. The top of the heart, known as the heart’s base, connects to the great blood vessels of the body: the aorta, vena cava, pulmonary trunk, and pulmonary veins. Circulatory LoopsThere are 2 primary circulatory loops in the human body: the pulmonary circulation loop and the systemic circulation loop.
Pulmonary circulation transports deoxygenated blood from the right side of the heart to the lungs, where the blood picks up oxygen and returns to the left side of the heart. Blood Vessels Blood vessels are the body’s highways that allow blood to flow quickly and efficiently from the heart to every region of the body and back again. Circulatory - Amazing Facts. Why is the circulatory system important? The main organ of the circulatory system is the heart, which is responsible for pumping oxygenated blood throughout the body.
Without the heart, a human cannot live. Other parts of the circulatory system include the blood and blood vessels, such as arteries and veins. Arteries are responsible for carrying blood away from the heart, and veins are responsible for carrying blood toward the heart. Capillaries are also blood vessels; they are the structures that connect arteries to veins throughout the body. The blood itself has many different types of cells that help the body function, such as red blood cells, white blood cells and platelets. Red blood cells are transporters of oxygen and carbon dioxide, and white blood cells serve to protect the body against harmful germs and disease. Platelets are thick blood cells that stop the body from bleeding when there is an injury, such as a cut or a wound. Learn more about Human Anatomy.
What Are Red Blood Cells? - Health Encyclopedia - University of Rochester Medical Center. Red blood cells play an important role in your health by carrying fresh oxygen throughout the body. Click to Enlarge Red blood cells are round with a flattish, indented center, like doughnuts without a hole. Your healthcare provider can check on the size, shape, and health of your red blood cells using tests, such as the complete blood count screening. Red blood cells at work Hemoglobin is the protein inside red blood cells that carries oxygen. Red blood cells are made inside your bones, in the bone marrow. Nutrition and red blood cells Foods rich in iron help you maintain healthy red blood cells. Illnesses of the red blood cells Most people don't think about their red blood cells unless they have a disease that affects these cells. Diseases of the red blood cells include many types of anemia, a condition in which there are too few red blood cells to carry sufficient oxygen throughout the body.
These are common types of anemia: Iron-deficiency anemia. Heart and Circulatory System. With each heartbeat, blood is sent throughout our bodies, carrying oxygen and nutrients to every cell. Every day, the approximately 10 pints (5 liters) of blood in your body travel many times through about 60,000 miles (96,560 kilometers) of blood vessels that branch and cross, linking the cells of our organs and body parts.
The Heart Click through this slideshow to learn about the heart. When blood circulates in the body, it enters the heart through the right atrium, passes through to the right ventricle, and flows out through the pulmonary artery to the lungs, where it picks up oxygen and gets rid of carbon dioxide. From the lungs, blood returns to the left atrium and then enters the left ventricle, where it is pumped to the body through the aorta. © 2017 The Nemours Foundation/KidsHealth. About the Heart and Circulatory System The circulatory system is composed of the heart and blood vessels, including arteries, veins, and capillaries.
Arteries carry blood away from the heart. Stroke. Major Organs, Tissues, and Cells - The Circulatory System. How does the blood circulatory system work? - National Library of Medicine - PubMed Health. What is the difference between an artery & a vein? - Heart & Circulatory System. You may have been told that you had a heart attack or a stroke because of a blocked artery. What exactly is an artery? Arteries, like veins, are tube-shaped vessels that carry blood in the body. The chief difference between arteries and veins is the job that they do. Arteries carry oxygenated blood away from the heart to the body, and veins carry oxygen-poor blood back from the body to the heart. Your body also contains other, smaller blood vessels. Arteries transport blood containing oxygen and nutrients to smaller tubes called arterioles, which then deliver blood to even smaller vessels called capillaries.
Cardiovascular System.