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Grade 10 Life Sciences Lesson
Transcript of Grade 10 Life Sciences Lesson
the Anatomy and Structure of the Heart. The Heart and Blood Circulation The Circulatory System What is the purpose of the circulatory system? To move materials throughout the body:
- Antibodies What is Pulmonary Circulation?
The flow of blood through the heart to the lungs and back to the heart THE HEART What is Pulmonary Circulation? The flow of blood through the heart to the lungs and back to the heart STEP BY STEP through the heart and lungs Miss Burger Components of the Circulatory System The Heart Veins Arteries Carries blood from the heart to the body Carries blood from the body to the heart What is the circulatory System? The bodily system consisting of the
heart, blood vessels, and blood that
circulates blood throughout the body Has four compartments called chambers:
–The two upper chambers are called
the right and left atria
–The two lower chambers are called
the right and left ventricles Blood, high in carbon dioxide and low in oxygen, returns from the body to the heart. It enters the right atrium through the superior and inferior vena cavae. B C D A The right atrium contracts, forcing the blood into the right ventricle. When the right ventricle contracts, the blood leaves the heart and goes through the pulmonary artery to the lungs. The pulmonary arteries are the only arteries that carry blood that is high in carbon dioxide Oxygen-rich blood travels from the lungs through the pulmonary vein and into the left atrium. The pulmonary veins are the only veins that carry oxygen-rich blood. The left atrium contracts and forces the blood into the left ventricle. The left ventricle contracts, forcing the blood out of the heart and into the aorta Labeling the Heart: ???????????
Why are the arteries and veins shown in blue and red? Question: