Questions and Answers
The circulatory system consists of three parts: the blood, the heart, and the blood vessels.
False
The circulatory system transports oxygen and nutrients to cells and removes wastes from body cells.
True
The circulatory system distributes water throughout the body to help regulate body temperature.
False
The main role of the circulatory system is to deliver needed materials such as ____.
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Waste materials such as ____ are carried by the circulatory system.
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What are the functions of the circulatory system?
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What would most likely occur first if the circulatory system suddenly stopped functioning?
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Blood vessels that carry blood to the heart are called?
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Blood vessels that carry blood away from the heart are called?
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Which type of blood vessel is both strong and elastic?
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If a blood vessel has valves, it is probably a(n)
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The smallest and most numerous blood vessels in the body are?
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The ventricles are?
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The heart chamber that receives blood from the venae cavae is the?
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Blood returning from the lungs enters the _____ of the heart.
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Blood going to the lungs leaves from the ________ of the heart.
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Blood flows from the right atrium to the right ventricle through the?
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The ______ valve prevents blood from going from the left ventricle to the left atrium.
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Blood entering the right atrium is?
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Blood entering the left atrium is?
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How is the blood located in the pulmonary vein different than the blood in all other veins of the body?
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How is the blood located in the pulmonary artery different than the blood in all other arteries of the body?
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Red blood cells ______.
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Defending the body against bacterial infection and invasion by foreign substances is the function of?
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The major function of ______ is to assist in the blood clotting process.
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Which of the following blood components is most likely malfunctioning in a person with Von Willebrand Disorder?
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A doctor finds that her patient's white blood cell count is higher than normal. What does this most likely indicate?
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Carries deoxygenated blood.
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Carries blood away from the heart.
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Makes up part of the circulatory system.
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Transports blood.
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Carries blood to the heart.
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Only one cell thick.
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Place where exchange of important substances occurs.
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Carries oxygenated blood.
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Blood vessel with highest pressure.
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Thickest of all blood vessels.
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Contains many one-way valves.
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Clear, yellowish fluid.
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Resemble pinched-in discs.
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Irregularly shaped with a nucleus.
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Study Notes
Circulatory System Overview
- Comprises four parts: blood, heart, blood vessels, and lymphatic system.
- Functions include transporting oxygen, nutrients, and waste removal.
Blood Transportation
- Transports oxygen and nutrients to cells, removing waste materials like carbon dioxide.
- Distributes heat (not water) to help regulate body temperature.
Key Components of Blood Vessels
- Veins carry blood to the heart; arteries carry blood away.
- Arteries are strong and elastic, designed to withstand high pressure.
- Valves present in veins prevent backflow of blood.
Types of Blood Vessels
- Capillaries are the smallest blood vessels, facilitating the exchange of substances.
- Blood vessels categorized by function: arteries, capillaries, and veins.
Heart Structure and Function
- Comprised of chambers: ventricles pump blood, atria receive blood.
- Right atrium receives deoxygenated blood from the venae cavae; left atrium receives oxygenated blood.
- Blood flows from right atrium to right ventricle via the tricuspid valve.
- Mitral (bicuspid) valve prevents backflow from the left ventricle to the left atrium.
Blood Characteristics
- Deoxygenated blood enters the right atrium, while oxygenated blood enters the left atrium.
- Blood in the pulmonary vein is oxygenated; blood in the pulmonary artery is deoxygenated.
Blood Cells and Their Functions
- Red blood cells transport respiratory gases.
- White blood cells defend against infections and foreign substances.
- Platelets are crucial for blood clotting processes.
Medical Conditions
- Von Willebrand disease impairs clotting due to malfunctioning platelets.
- An elevated white blood cell count indicates possible infection.
Additional Blood Vessel Details
- Veins carry deoxygenated blood; thicker walls characterize arteries.
- Capillaries are the site of significant substance exchange within tissues.
Plasma and Blood Composition
- Plasma, a clear, yellowish fluid, is a component of blood.
- Red blood cells have a unique "pinched-in" disc shape, aiding their function in gas transport.
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Test your knowledge of the circulatory system with these flashcards. Each card presents a true or false statement about its key components and functions. Perfect for students learning about human anatomy.
