Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What is the primary site of diffusion between blood and body tissues?
capillaries
arteries
veins
arterioles
venules
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Which of the following adaptations help arteries carry blood at high pressure?
elastic fibres
thick smooth muscle layer
collagen
all of the above
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Which of the following is NOT a type of blood vessel in the mammalian circulatory system?
arterioles
arteries
lymph vessels
veins
capillaries
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What is the correct order of blood flow through the different types of blood vessels?
arteries, veins, arterioles, venules, capillaries
arteries, arterioles, capillaries, venules, veins
capillaries, arterioles, arteries, veins, venules
veins, venules, capillaries, arterioles, arteries
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What happens during vasoconstriction?
smooth muscle relaxes, narrowing the lumen of a blood vessel
smooth muscle contracts, dilating the lumen of a blood vessel
smooth muscle relaxes, dilating the lumen of a blood vessel
smooth muscle contracts, narrowing the lumen of a blood vessel
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What is the primary function of pocket valves in veins?
to control blood flow using smooth muscle
to prevent the backflow of blood
to provide strength to the vessel walls
to pump blood away from the heart
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Which of the following blood vessels have the least amount of smooth muscle?
arteries
veins
arterioles
venules
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What is the primary role of the thick smooth muscle layer in arteries?
to stretch and recoil, minimising changes in pressure
to provide strength, preventing the vessel from bursting
to contract and relax, controlling blood flow through vasoconstriction and vasodilation
to form pocket valves, preventing the backflow of blood
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What is the term for the relaxation of smooth muscle in arteries and arterioles, which increases blood flow?
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Describe two key adaptations of capillaries that enable efficient exchange of substances between blood and tissues.
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