0
Does dilation of the afferent arteriole decrease Glomular filtration rate?
Wiki User
∙ 14y ago
Yea....about that... AIDS
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
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.
How would pressure in the glomerulus be affected by constricting the afferent arteriole?
Pressure in the glumerulus would decrease. As a result, hydrostatic pressure would also decrease, resulting in a decreased filtration rate.
Dilation of the afferent arteriole decrease GFR?
no, it would increase GFR constriction would decrease GFR
What is the primary stimulus for the secretion of aldosterone?
The principal determinant for the release of aldosterone from the adrenal cortex is a decrease of blood pressure in the afferent arteriole.
What happened to the glomerular pressure as the afferent radius is increased?
increase afferent radius or decrease efferent radius depending on the degree of change in blood pressure
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.
How would pressure in the glomerulus be affected by constricting the afferent arteriole?
Pressure in the glumerulus would decrease. As a result, hydrostatic pressure would also decrease, resulting in a decreased filtration rate.
Dilation of the afferent arteriole decrease GFR?
no, it would increase GFR constriction would decrease GFR
Would vasoconstriction of the renal arteries decrease blood flow to the kidneys?
Yes. If you constrict the afferent arteriole then renal blood flow will decrease.
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 happens if the diameter of the efferent arteriole is constricted?
When the afferent arteriole is constricted it causes blood to be unable to flow into the glomerulus, overall decreasing hydrostatic pressure and causing the bowman's capsule to decrease filtration.
What is the primary stimulus for the secretion of aldosterone?
The principal determinant for the release of aldosterone from the adrenal cortex is a decrease of blood pressure in the afferent 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
What releases when the sympathetic nervous system responds to a decrease in glomerular filtration rate?
Increased sympathetic activity causes the afferent arterioles of the renal glomerulus to constrict, thereby reducing blood flow into the glomerulus. Because a decrease in blood flow reduces blood pressure in the glomerulus, which is the driving force for filtration, GFR decreases.
What happened to the glomerular pressure as the afferent radius is increased?
increase afferent radius or decrease efferent radius depending on the degree of change in blood pressure
How can you decrease the glomerular filtration rate?
gfr is the net results of the balance between hydrostatic pressures &colloid osmotic pressures of intra vascular compartment & within the Bowman's capsule,where the net pressure gradient is towards filtration.i.e. "Net filtration pressure".Any method which will reduce this net filtration pressure will reduce GFR.That can be achieved by increasing the plasma globulin ad albumin level(increase colloid osmotic pressure),hypotension and addition of vasocostrictor at afferent and vasodialtors at efferent tubule(reducing capilary hydrostatic pressure) or obstructing the free flow of urine(increasing Bowman's casular hydrostatic pressure)
When there is increased resistance then arteriolar constriction and pressure drops?
Resistance changes dramatically with changes in diameter of blood vessels (arterioles are one type of blood vessel). If you INCREASE the diameter of the arteriole, you DECREASE the resistance and thus DECREASE the blood pressure.
