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44 Cards in this Set
- Front
- Back
Systemic blood flow
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Cardiac output from left side of the heart
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Pulmonary blood flow
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Cardiac output from right side of the heart
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Deliver oxygenated blood to the tissues
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Arteries
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are the smalles branches of the arteris
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Arterioles
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Are formed from merged capillaries
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Venules
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Are thick-walled with extensive elastic tissue and smooth muslce
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Arteries
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Under high pressure
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Arteries
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Highest resistance in the cardiovascular system
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Arterioles
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the blood volume contained in the arteries is called the stressed volume
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Arteries
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Are teh site of exchange of nutrients water and gases
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capillaries
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Have a smooth muslce wall that is extensively innervated by autonomic nerve fiber
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Arterioles
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B2-adrenergic receptors in arteriols are found on?
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are found on arterioles of skeletal muslce
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*1- adrenergic receptors are found on the arterioles
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of the skin, splanchic, and renal circulations
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Arteriolar resistance is regulated by the?
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autonomic nervous system
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what have the largest total cross sectional and surface area
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Capillaries
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are thin walled
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Capillaries
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Capillaries are consist of single layer of_______ cells surrounded by________.
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endothelial cells surrounded by basal lamina
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Veins have __adrenergic receptors
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*1
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Largest vein is the
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vena cava
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Vena cava return
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blood to the heart
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Veins have what kind of wall?
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thin
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veins are under waht kind of pressure
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low
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what contains the highes porportion of bloood in the cardi system
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veins
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the blood volume contained in the veins is called the
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unstressed volume
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velocity is directly peoportional to ____and inversily to______
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blood flow
cross sec area |
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Flow is analogous to?
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current
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Pressure is analogous to?
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voltage
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what drives blood flow
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pressure gradient
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Resistance is directly proportional to the
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viscosity of the blood
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Resistance is inversily proportional to?
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blood flow
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resistance is directly pro to 2 things
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viscosity of the blood
lenght of the vessel |
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resistance is inversily pro to the?
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fourth power of the vessel radius
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Parallel resistance is illustrated by the
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systemic circulation
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When an artery is added in parallel the total resistance dec or inc
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dec
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Series resistance is illustrated by the?
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arrangement of blood vessels within a given organ
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Largest proportion of resistance in series is contributed by
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arterioles
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What happens to the pressure when blood flows through the series of blood vessels
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dec
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reynolds number?
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perdicts whether blood flow is laminar or tur
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Reynolds number and therefore tur is increased by the following factors
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dec blood viscosity
inc blood velocity |
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example of dec blood viscosity
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anemia, hematocrit
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Higher the elastance is the lower the?
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compliance is
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cmpliance is directly proportional to? and inversily?
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volume
pressure |
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Compliance is much greater for_____ than for _____
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veins than for arteries
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Capacitance of the arteries decreases with
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age
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