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When the afferent arteriole radius is 0.35 mm and the efferent arteriole radius is 0.40 mm what is the glomerular filtration rate?
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∙ 12y ago
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∙ 12y ago
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What is the effect of constricted arterioles in the glomerular filtration rate?
Decreasing the diameter of the efferent arteriole would increase the hydrostatic pressure inside the glomerulus and effectively increase the glomerular filtration rate. If you increase the diameter of the afferent arteriole you would achieve the same effect.
Where does the transition from an afferent arteriole to an efferent arteriole occur?
glomerulus. The afferent arteriole leads to a ball of capillaries called a glomerulus which is enclosed in a nephron structure called the glomerular capsule. Blood leaves the glomerulus by way of the efferent arteriole.
Is the glomerular filtration rate the same when the efferent arteriole is constricted and dilated?
OLD, INCORRECT ANSWER: Changes in the diameter of the efferent arteriole will either increase (dilation) or decrease (constriction) the blood flow to the glomeruli. An increased flow means a more blood getting filtered over time. NEW, CORRECT ANSWER The 'efferent' arteriole leaves the renal corpuscle. It is easy to remember which direction efferent and afferent things are going by thinking e=exit and a=arrive. If you constrict the efferent arteriole, you actually inhibit blood from leaving the glomerulus, thus increasing the outward hydrostatic pressure pushing fluid into Bowman's capsule and increasing filtration. If you dilate the efferent arteriole, then you reduce pressure in the glomerular capillaries and reduce filtration.
What is the blood vessel that drains blood from the glomerulus?
Efferent arteriole takes the blood away from the glomerulus
What the arteriole leads into the glomerulus?
efferent arteriole
How do you increase your GFR?
To increase your glomerular filtration rate, blood flow needs to be increased to the kidneys and the impaired kidneys function restored. The glomerular filtration rate, of GFR, measures how much blood passes through the glomeruli into the kidneys each minute.
The glomerular capillaries differ from other capillary networks in the body because they?
It is unique from other capillary beds in that it is supplied with and drained by arterioles, the afferent arteriole and efferent arteriole, respectively.
An obstruction in the afferent arteriole would reduce the flow of blood into the?
efferent arteriole]
How could adjust the afferent or efferent radius to compensate for the effect of reduced blood pressure on glomerular filtration rate?
increase afferent radius or decrease efferent radius depending on the degree of change in blood pressure
Does the efferent arteriole take blood to the nephron?
No. I recieves blood from the afferent arteriole.
Why does blood get filtered by the kidneys?
Blood pressure promotes filtration of blood in the kidneys by, generally, being greater in pressure than blood colloid osmotic pressure and glomerular capsule pressure which produces a net filtration pressure of about 10 mm Hg. Net filtration pressure forces a large volume of fluid into the capsular space. When blood pressure increase or decreases slightly, changes in the diameters of the afferent and efferent arterioles can actually keep net filtration pressure steady to maintain normal glomerular filtration. Constriction of the afferent arteriole decreases blood flow into the glomerulus, which decreases net filtration pressure. Constriction of the efferent arteriole slows outflow of blood and increases net filtration pressure.
Why is the efferent arteriol smaller than afferent arteriole?
Efferent arteriole is narrower so as to create hydrostatic pressure for the process of ultrafilteration.
