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Questions and Answers
What is the primary function of the cardiovascular system?
What is the primary function of the cardiovascular system?
- To regulate hormone levels in the body.
- To facilitate digestion of food.
- To deliver oxygen and nutrients to tissues. (correct)
- To produce red blood cells.
Which of the following correctly describes the blood flow through the pulmonary circuit?
Which of the following correctly describes the blood flow through the pulmonary circuit?
- Oxygenated blood is sent from the heart to the lungs.
- Deoxygenated blood is returned from the lungs to the heart.
- Oxygenated blood flows directly to the body's tissues.
- Deoxygenated blood is sent to the lungs, and oxygenated blood returns to the heart. (correct)
What structure in the heart prevents the backflow of blood?
What structure in the heart prevents the backflow of blood?
- Atria.
- Valves. (correct)
- Myocardium.
- Pericardium.
Which vessels are responsible for carrying oxygenated blood throughout the body?
Which vessels are responsible for carrying oxygenated blood throughout the body?
In the cardiovascular system, what is the role of capillaries?
In the cardiovascular system, what is the role of capillaries?
Flashcards
Systemic Circulation
Systemic Circulation
The process of delivering oxygen-rich blood to the body's tissues and removing waste products like carbon dioxide.
Pulmonary Circulation
Pulmonary Circulation
The process of transporting deoxygenated blood to the lungs for oxygenation, and then bringing the newly oxygenated blood back to the heart.
Heart
Heart
The muscular organ responsible for pumping blood throughout the body, consisting of four chambers: two upper atria and two lower ventricles.
Myocardium
Myocardium
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Arteries
Arteries
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Study Notes
Cardiovascular System
- Functions:
- Deliver oxygen and nutrients to tissues.
- Remove waste products.
- Regulate blood pressure and flow.
Blood Flow
- Systemic Circuit: Oxygenated blood flows to tissues; deoxygenated blood returns to the heart.
- Pulmonary Circuit: Deoxygenated blood flows to lungs; oxygenated blood returns to the heart.
Anatomy of Heart and Vessels
- Heart: Chambers (atria, ventricles), valves, myocardium, pericardium.
- Vessels: Arteries, veins, capillaries.
Functions of Heart & Vessel Structures
- Valves: Prevent backflow.
- Arteries: Carry oxygenated blood (except pulmonary arteries).
- Veins: Return deoxygenated blood (except pulmonary veins).
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