Cardiovascular System By: Jamie Stephenson

History of the Cardiovascular system William Harvey, a student of Hieranymus Farbricius (who had earlier described the valves of the veins without recognizing their function), performed a sequence of experiments and announced in 1628 the discovery of the human circulatory system as his own and published an influential book about it. This work with its essentially correct exposition slowly convinced the medical world. Harvey was not able to identify the capillary system connecting arteries and veins; these were later described by Marcello Malpighi.

Did you know that each day, 2,000 gallons (more than 7,570 liters) of blood 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?????

What Makes up the Cardiovascular system? The Heart & the The Heart & the The Circulatory system The Circulatory system

The Circulatory System The circulatory system is composed of Both - The heart and blood vessels, Inlcuding the: The heart and blood vessels, Inlcuding the: Arteries, veins, and capillaries. Arteries, veins, and capillaries.

The Heart The heart is the key organ in the circulatory system. The heart is the key organ in the circulatory system. As a hollow, muscular pump, its main function is to propel blood throughout the body. As a hollow, muscular pump, its main function is to propel blood throughout the body.

Interesting Facts The heart usually beats from 60 to 100 times per minute, but can go much faster when it needs to. The heart usually beats from 60 to 100 times per minute, but can go much faster when it needs to. The heart beats about 100,000 times a day The heart beats about 100,000 times a day It beats more than 30 million times per year It beats more than 30 million times per year And about 2.5 billion times in a 70-year lifetime. And about 2.5 billion times in a 70-year lifetime.

Why and When does our Heart Pump? The heart gets messages from the body that tell it when to pump more or less blood depending on a person's needs. The heart gets messages from the body that tell it when to pump more or less blood depending on a person's needs. When we're sleeping, it pumps just enough to provide for the lower amounts of oxygen needed by our bodies at rest. When we're sleeping, it pumps just enough to provide for the lower amounts of oxygen needed by our bodies at rest. When we're exercising or frightened, the heart pumps faster to get more oxygen to our bodies. When we're exercising or frightened, the heart pumps faster to get more oxygen to our bodies. The circulatory system is an organ system that moves nutrients, gases, and wastes to and from cells to help fight diseases and help stabilize body temperature and pH to maintain homeostasis. The circulatory system is an organ system that moves nutrients, gases, and wastes to and from cells to help fight diseases and help stabilize body temperature and pH to maintain homeostasis.

Anatomy of the Heart The heart is made up of four different blood-filled areas, and each of these areas is called a chamber. The heart is made up of four different blood-filled areas, and each of these areas is called a chamber. There are two chambers on each side of the heart. One chamber is on the top and one chamber is on the bottom. The two chambers on top are called the atria The heart has a left atrium and a right atrium. There are two chambers on each side of the heart. One chamber is on the top and one chamber is on the bottom. The two chambers on top are called the atria The heart has a left atrium and a right atrium.

Anatomy of the Heart The two chambers on the bottom are called the ventricles. The two chambers on the bottom are called the ventricles. The heart has a left ventricle and a right ventricle. The heart has a left ventricle and a right ventricle. Their job is to squirt out the blood to the body and lungs. Their job is to squirt out the blood to the body and lungs. Running down the middle of the heart is a thick wall of muscle called the septum. The septum's job is to separate the left side and the right side of the heart. Running down the middle of the heart is a thick wall of muscle called the septum. The septum's job is to separate the left side and the right side of the heart.

Function of the Chambers The atria and ventricles work as a team — the atria fill with blood, then dump it into the ventricles. The atria and ventricles work as a team — the atria fill with blood, then dump it into the ventricles. The ventricles then squeeze, pumping blood out of the heart. While the ventricles are squeezing, the atria refill and get ready for the next contraction. The ventricles then squeeze, pumping blood out of the heart. While the ventricles are squeezing, the atria refill and get ready for the next contraction.

The Valves of the Heart Two of the heart valves are the mitral valve and the tricuspid valve. They let blood flow from the atria to the ventricles. Two of the heart valves are the mitral valve and the tricuspid valve. They let blood flow from the atria to the ventricles. The other two are called the aortic valve and pulmonary valve, and they're in charge of controlling the flow as the blood leaves the heart. These valves all work to keep the blood flowing forward. They open up to let the blood move ahead, then they close quickly to keep the blood from flowing backward. The other two are called the aortic valve and pulmonary valve, and they're in charge of controlling the flow as the blood leaves the heart. These valves all work to keep the blood flowing forward. They open up to let the blood move ahead, then they close quickly to keep the blood from flowing backward.

Circulation The blood moves through many tubes called arteries and veins, which together are called blood vessels. These blood vessels are attached to the heart. The blood vessels that carry blood away from the heart are called arteries. The ones that carry blood back to the heart are called veins. The blood moves through many tubes called arteries and veins, which together are called blood vessels. These blood vessels are attached to the heart. The blood vessels that carry blood away from the heart are called arteries. The ones that carry blood back to the heart are called veins.

3 Types of Circulation The body's circulatory system really has three distinct parts: Pulmonary circulation, coronary circulation, and systemic circulation. Or, the lungs (pulmonary), the heart (coronary), and the rest of the system (systemic). Each part must be working independently in order for them to all work together.

What is the Function of Circulation? It takes less than 60 seconds to pump blood to every cell in your body! It takes less than 60 seconds to pump blood to every cell in your body! The left side of your heart sends oxygen-rich blood out to the body. The body takes the oxygen out of the blood and uses it in your body's cells. When the cells use the oxygen, they make carbon dioxide and other stuff that gets carried away by the blood. It's like the blood delivers lunch to the cells and then has to pick up the trash! The left side of your heart sends oxygen-rich blood out to the body. The body takes the oxygen out of the blood and uses it in your body's cells. When the cells use the oxygen, they make carbon dioxide and other stuff that gets carried away by the blood. It's like the blood delivers lunch to the cells and then has to pick up the trash!

What does the Blood do After Delivering Oxygen? The returning blood enters the right side of the heart. The returning blood enters the right side of the heart. The right ventricle pumps the blood to the lungs for a little freshening up. The right ventricle pumps the blood to the lungs for a little freshening up. In the lungs, carbon dioxide is removed from the blood and sent out of the body when we exhale. In the lungs, carbon dioxide is removed from the blood and sent out of the body when we exhale. Next – we inhale fresh breath of oxygen that can enter the blood to start the process again. And remember, it all happens in about a minute! Next – we inhale fresh breath of oxygen that can enter the blood to start the process again. And remember, it all happens in about a minute!

How to Keep a Healthy Heart Remember that your heart is a muscle. If you want it to be strong, you need to exercise it. How do you do it? By: jumping rope, dancing, or playing basketball. Try to be active every day for at least 30 minutes! An hour would be even better for your heart! Remember that your heart is a muscle. If you want it to be strong, you need to exercise it. How do you do it? By: jumping rope, dancing, or playing basketball. Try to be active every day for at least 30 minutes! An hour would be even better for your heart! Eat a variety of healthy foods and avoid foods high in unhealthy fats, such as saturated fats and trans fats (reading the labels on foods can help you figure out if your favorite snacks contain these unhealthy ingredients). Eat a variety of healthy foods and avoid foods high in unhealthy fats, such as saturated fats and trans fats (reading the labels on foods can help you figure out if your favorite snacks contain these unhealthy ingredients). Try to eat at least five servings of fruits and vegetables each day. Try to eat at least five servings of fruits and vegetables each day. Avoid sugary soft drinks and fruit drinks. Avoid sugary soft drinks and fruit drinks. Don't smoke. It can damage the heart and blood vessels. Don't smoke. It can damage the heart and blood vessels.

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