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Questions and Answers
What is the role of the left ventricle in the circulatory system?
What is the role of the left ventricle in the circulatory system?
Which structure prevents backflow of blood from the right ventricle to the right atrium?
Which structure prevents backflow of blood from the right ventricle to the right atrium?
What process occurs in the capillaries during blood flow?
What process occurs in the capillaries during blood flow?
Which chamber of the heart first receives oxygenated blood?
Which chamber of the heart first receives oxygenated blood?
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What is the function of the systemic circuit in the circulatory system?
What is the function of the systemic circuit in the circulatory system?
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Study Notes
Systemic Circuit
- Carries oxygenated blood from the left ventricle to the body
- Collects deoxygenated blood and returns it to the right atrium
Heart Chambers
- Composed of four chambers: two atria (upper) and two ventricles (lower)
- Atrioventricular valves separate the chambers
Right Atrium
- Thin-walled chamber
- Receives blood from superior and inferior vena cava
- Pumps blood to the right ventricle
Right Ventricle
- Thick-walled chamber
- Receives blood from the right atrium
- Pumps blood to the pulmonary artery
Left Atrium
- Receives blood from the pulmonary veins
- Pumps blood to the left ventricle
Left Ventricle
- Thick-walled chamber
- Receives blood from the left atrium
- Pumps blood to the aorta
Blood Flow
- Begins with right atrium receiving blood from superior and inferior vena cava
- Right ventricle pumps blood to pulmonary artery via pulmonary semilunar valve
- Oxygen exchange occurs in lungs (oxygen into capillaries, carbon dioxide out)
- Oxygenated blood returns to the heart via pulmonary veins
- Left atrium receives blood from pulmonary veins
- Left ventricle pumps oxygenated blood into aorta via aortic semilunar valve
- Aorta branches to smaller arteries
- Oxygen exchange occurs in capillaries (oxygen into cells, carbon dioxide out)
- Deoxygenated blood returns to heart via superior and inferior vena cava
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Description
Test your knowledge on the human circulatory system, including the heart's structure and function. This quiz covers the roles of the various heart chambers and the pathway of blood flow through the body. Perfect for students learning about human biology.
