CIRCULATORY SYSTEM

BY PAULA BERLANGA GARCÍA AND INÉS UTRERO BORLAZ

CARDIOVASCULAR SYSTEM

Your heart and circulatory system make up your cardiovascular system. Your heart works as a pump that pushes blood to the organs, tissues, and cells of your body. If all the vessels of this network in your body were laid end to end, they would extend for about 60,000 miles (more than 96,500 kilometers), which is far enough to circle the Earth more than twice! In this diagram, the vessels that carry oxygen-rich blood are colored red, and the vessels that carry oxygen-poor blood are colored blue.

THE BLOOD

The circulatory system is the route by which the cells in your

body get the oxygen and nutrients they need, but the

blood is the actual carrier of the oxygen and nutrients. Blood is actually a tissue made up of a variety of cells, each having a

different job. Three main types of blood cells circulate with the

plasma: • Platelets

• Red blood cells (erythrocytes) carry oxygen.

• White blood cells (leukocytes) ward off infection

BLOOD VESSEL CUTWAY VIEW

BLOOD VESSELS OF THE HEART: CORONARY ARTERIES

The heart muscle, like every other organ or tissue in your body, needs oxygen-rich blood to survive. Blood is supplied to the heart by its own coronary circulation. The aorta (the main blood supplier to the body) branches off into two main coronary blood vessels (also called arteries). These coronary arteries branch off into smaller arteries, which supply oxygen-rich blood to the entire heart muscle.

BLOOD VESSELS OF THE TORSO

The circulatory system carries blood to all parts of your body. Arteries carry oxygen-rich blood away from your heart, and veins carry oxygen-poor blood back to your heart. In this diagram of the torso, the vessels that carry oxygen-rich blood are colored red, and the vessels that carry oxygen-poor blood are colored blue. In pulmonary circulation, though, the roles are switched: the pulmonary artery brings oxygen-poor blood into your lungs and the pulmonary vein brings oxygen-rich blood back to your heart

VASCULAR SYSTEM OF THE HEART

A blood cell’s journey: The blood cell moves from the right atrium into the right ventricle and then into the lungs, where it absorbs oxygen. It travels through the pulmonary vein to the left atrium, then on to the left ventricle and out the aorta. It moves to a coronary artery, branches off to an arteriole, and finally through a capillary, where it gives oxygen to a muscle cell and absorbs carbon dioxide (CO2) from the muscle cell. The blood cell returns to the right atrium where it is pumped into the lungs to give off the CO2 and absorb more oxygen.

OXYGEN TRANSFER PROCESS

PREVENTING A HEART ATTACK

Heart Attack Prevention For A Healthier Future Thousands of people throughout the world suffer from a heart attack every day and millions are at risk. Sadly, the numbers are increasing but, the good news is that it can be prevented.

The key to preventing this deadly disease later in life is to become aware now, not later, because it could be too late.

Here are 2 simple steps that you need to take to get started.1. Learn what the risks of heart disease are;2. Eliminate some of those risks - there are some risks that cannot be avoided.

BIBLIOGRAPHY

www.texas heart institute.org www.preventing-heart-attack.com www.sweethaven.com www.thehumananatomyorgans.com

THANKS FOR EVERYONE

BY INÉS UTRERO BORLAZ AND

PAULA BERLANGA GARCÍA.