Get Your Heart Racing

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Questions and Answers

What is the function of the left ventricle and where does it pump blood to?

The left ventricle pumps oxygen-rich blood out of the heart and into the aorta, which distributes it to the rest of the body.

What is the role of the pulmonary arteries and veins in the circulatory system?

The pulmonary arteries carry deoxygenated blood from the right ventricle to the lungs, where it is oxygenated through gas exchange in the capillaries. The oxygen-rich blood then flows through the pulmonary veins into the left atrium.

How does deoxygenated blood return to the heart?

Deoxygenated blood returns to the heart through the superior and inferior vena cava, which empty into the right atrium.

What is the function of the atria in the heart?

The atria receive blood returning to the heart and contract to push the blood into the ventricles. Signup and view all the answers

What is the cycle of blood flow in the circulatory system?

Deoxygenated blood flows from the body to the right atrium, then to the right ventricle, and then to the lungs through the pulmonary arteries. Oxygen-rich blood returns to the heart through the pulmonary veins, enters the left atrium, and then the left ventricle, which pumps it out to the rest of the body through the aorta. Signup and view all the answers

What are some risk factors for cardiovascular disease?

Risk factors for cardiovascular disease include high blood pressure, high cholesterol, smoking, obesity, diabetes, and a sedentary lifestyle. Signup and view all the answers

How does gas exchange occur in the capillaries of the lungs?

Gas exchange occurs in the capillaries of the lungs through diffusion, where oxygen from the air in the alveoli moves into the bloodstream, and carbon dioxide from the bloodstream moves into the alveoli to be exhaled. Signup and view all the answers

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Study Notes

The text describes the different parts and functions of the heart and circulatory system. The right ventricle pumps deoxygenated blood to the lungs through the pulmonary arteries, where it is oxygenated through gas exchange in the capillaries. The oxygen-rich blood then flows through the pulmonary veins into the left atrium, which contracts to push the blood into the left ventricle. The left ventricle pumps the oxygen-rich blood out of the heart and into the aorta, which distributes it to the rest of the body through a network of smaller arteries and capillaries. Deoxygenated blood returns to the heart through the superior and inferior vena cava, which empty into the right atrium. The right atrium sends the deoxygenated blood to the right ventricle, and the cycle begins again. The text also explains the role of the atria and ventricles, and discusses cardiovascular disease and its risk factors.