Physiology 2420
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Which of the following is considered a pressure reservoir? Arteries, veins, arterioles, venules, capillaries | Arteries
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| Which portion of the vasculature is considered to have high compliance? Arteries, veins, arterioles, venules, capillaries | veins
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| Where is the greatest resistance in vasculature? Arteries, veins, arterioles, venules, capillaries | arterioles
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| Which acts as a volume reservoir? Arteries, veins, arterioles, heart, capillaries | veins
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| Which has highly elastic walls? Arteries, veins, arterioles, venules, capillaries | Arteries
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| Which of the following has the highest compliance? Arteries, veins, arterioles, venules, capillaries | veins
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| Which is the result of a reduction in blood flow? Active hyperanemia or Reactive hyperanemia | reactive hyperanemia
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| Where can fenestrated capillaries be located? | Kidney
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| What is the driving force for blood flow through the systematic circuit? | mean arterial pressure
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| Which of the following is not a component of microcirculation? arterioles, venules, capillaries, metaarterioles, veins | veins
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| What component of artery walls allows them to store energy that is later used to maintain continuous blood flow though the circulatory system? | elastin
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| What is a measure of the change in vascular volume as pressure within the vessel is altered? | compliance
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| Resistance to blood flow is regulated primarily by what blood vessels? | arterioles
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| The total cross-sectional area is greatest in which blood vessels? | capillaries
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| Compare active hyperemia to reactive hyperemia. | One is caused by increased metabolic activity, the other in response to release of an occlusion to blood flow.
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| What is hyperemia? | increased blood flow in response to increased metabolic activity
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| What is a cause of hyperemia? | CO2 being produced faster than being removed, O2 consumed exceeds delivery rate, increased blood flow
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| What is reactive hyperemia? | Increased blood flow in response to a previous reduction in blood flow
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| What is a cause of reactive hyperemia? | blockage of blood flow to tissue, vasodilation,
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| At any given point in time, where is there the largest amount of blood in the cardiovascular system? | veins
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| Where is the lowest velocity of blood flow through the vasculature and what advantage does this have? | capillaries; enhances exchange
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| In blood pressure measurement, two pressures are measured and listed as a fraction. What are they? | systolic/diastolic
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| In lymph nodes, what type of cell filters are lymph? | macrophages (or lymphocytes)
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| What is the cardiovasular control center? | medulla oblangatta
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| Name one location of the arteriol baroreceptors. | carotid sinuses, aortic arch
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| What are two ways to increase the mean arterial pressure? | increase cardiac output, increase total peripheral resistance
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| How does lymph enter the lymphatic system and eventually flow through the lymphatic veins? | lymphatic capillaries
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| What are two stimuli for increasing the flow of blood to an area in both active an reactive hyperemia? (what causes vasodilation in both to occur)? | decreased oxygen and increased CO2
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| There are two different ways material can cross the wall of a continuous capillary? Name two of them. | increased cardiac output, increase total peripheral resistance
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| What is compliance? | ability to store pressure
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| Where is the lowest velocity in the vasculature and why is it advantageous for this portion of the vasculature to have low velocity? | caoillaries, enhance exchange.
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