Which of the following would most increase glomerular filtration rate?
Increased blood volume and increased blood pressure will increase GFR. Constriction in the afferent arterioles going into the glomerulus and dilation of the efferent arterioles coming out of the glomerulus will decrease GFR.
Which of the following increases the glomerular filtration rate quizlet?
The glomerular filtration rate increases, due to the increased blood flow into the glomerulus.
What happened to the urine volume when the solute gradient in the interstitial space was increased quizlet?
The urine volume went to zero. What happened to the urine concentration when the solute gradient in the interstitial space was increased? The urine concentration stayed the same.
What are the driving forces for filtration in the nephron?
The force of hydrostatic pressure in the glomerulus (the force of pressure exerted from the pressure of the blood vessel itself) is the driving force that pushes filtrate out of the capillaries and into the slits in the nephron.
What conditions increase glomerular filtration pressure quizlet?
The stretching of the afferent arteriole walls leads to increased constriction of the afferent arteriole. Activation of the macula densa cells leads to an increased glomerular filtration rate. Increased glomerular filtration rate leads to paracrine secretion from the macula densa.
How does blood pressure affect glomerular filtration quizlet?
High systemic blood pressure would increase GFR, which would cause too much water and solutes to leave in the urine. The kidney responds by constricting the afferent arteriole to decrease blood flow (GFR).
What causes an increase in the glomerular filtration rate?
An increase in renal arterial pressure (or renal blood flow) causes an increase in GFR. A reduction in renal arterial pressure (or renal blood flow) will have the opposite effect (1).
Which of the following resulted in an increase in filtration rate?
Which of the following resulted in an increase in the filtration rate? Both increasing the pressure above the beaker and increasing the concentration of solutes are correct. Both increasing the pore size and increasing the pressure above the beaker are correct.
What happened to the urine concentration and urine volume as the solute concentration in the interstitial space was increased Why?
Predict Question: What will happen to the urine volume and concentration as the solute gradient in the interstitial space is increased? The urine volume will decrease and the concentration will increase.
What happened to the urine volume of the solute gradient in the interstitial space was increased?
gradient in the interstitial space is increased? Your answer: The urine volume will decrease and the concentration will increase.
How does the high pressure help the glomerulus form filtrate?
Filtrate is produced by the glomerulus when the hydrostatic pressure produced by the heart pushes water and solutes through the filtration membrane. Glomerular filtration is a passive process as cellular energy is not used at the filtration membrane to produce filtrate.
How is pressure created in the glomerulus?
The glomerular filtration rate This is counteracted to some extent by inward pressure due to the hydrostatic pressure of the fluid within the urinary space, and the pressure generated by the proteins left in the capillaries that tend to pull water back into the circulatory system (colloidal osmotic pressure).
What effect does increased net filtration pressure have on GFR quizlet?
With respect to the net filtration pressure, an increase in blood pressure will increase glomerular filtration rate whereas a decrease in blood pressure will decrease glomerular filtration rate.
How does a decrease in blood pressure affect glomerular pressure quizlet?
Decreased Blood Pressure leads to afferent arteriole vasodilation and efferent arteriole vasoconstriction. This leads to a increase in glomerular hydrostatic pressure and therefore Increase in GFR.
Which pressure promotes filtration at the glomerulus?
Glomerular blood hydrostatic pressure Glomerular blood hydrostatic pressure (GBHP) promotes filtration – it pushes water and solutes in blood plasma through the glomerular filter. GBHP is the blood pressure in glomerular capillaries, which is about 55mm Hg.
Why did increasing the pressure increase the filtration rate?
Pressure increased the filtration rate but not the concentration of solutes because it increased the hydrostatic pressure gradient that exists.
What will happen to the urine volume and concentration in the presence of both ADH and aldosterone?
What will happen to the urine volume and the urine concentration (compared with baseline) in the presence of both aldosterone and ADH? Urine volume will decrease and concentration will increase.
What happened to the urine volume when the solute?
As the solute concentration increased the urine concentration increased proportionally. The urine volume decreased as the solute and urine concentration increased.
What happened to the urine concentration as the solute concentration was increased?
As the solute concentration increased the urine concentration increased proportionally.
How does the high-pressure help the glomerulus form filtrate quizlet?
How does its high-pressure condition aid its function of filtrate formation? The higher the capillary pressure, the more filtrate will be formed. What structural modification of certain tubule cells enhances their ability to reabsorb substances from the filtrate?
How does high pressure help the glomerulus form filtrate?
Filtrate is produced by the glomerulus when the hydrostatic pressure produced by the heart pushes water and solutes through the filtration membrane. Glomerular filtration is a passive process as cellular energy is not used at the filtration membrane to produce filtrate.
What increases glomerular capillary hydrostatic pressure?
The glomerular capillary hydrostatic pressure is affected by the afferent and efferent arteriolar resistance and the renal artery pressure (3). An increase in the afferent arteriolar diameter (decrease in resistance) causes an increase in the glomerular capillary hydrostatic pressure and an increase in GFR.
What effect does increased net filtration pressure have on GFR?
This increase in pressure in Bowman's space decreases the net filtration pressure, and thus decreases the GFR. The length and inside diameter of each nephron segment is relatively invariant and, therefore, its resistance to flow is constant.
What factors affect glomerular filtration rate quizlet?
The factors which determine GFR are the net effective filtration pressure, permeability characteristics of the glomerular membrane and its surface area.
What is the response to an increase in blood pressure in the afferent arteriole quizlet?
The afferent arteriole will constrict in response. Autoregulation will cause the renal blood pressure to rise more via positive feedback.
What causes high pressure in the glomerulus?
In hypertension the glomerular capillary pressure tends to increase because the reduction in afferent arteriolar resistance is greater than the reduction in efferent resistance.
Why did increasing the pressure increase the filtration rate but not the concentration of solutes How well did the results compare with your prediction quizlet?
Pressure increased the filtration rate but not the concentration of solutes because it increased the hydrostatic pressure gradient that exists. The solute concentration gradient didn't change from Trial 3 to 4 for 200 MWCO, however the pressure gradient increase allowed for the increased rate of filtration.
Does ADH increase or decrease urine concentration?
Antidiuretic hormone (ADH) is a chemical produced in the brain that causes the kidneys to release less water, decreasing the amount of urine produced. A high ADH level causes the body to produce less urine. A low level results in greater urine production.
Does aldosterone increase or decrease urine output?
Aldosterone increases urine production and decreases apical AQP2 expression in rats with diabetes insipidus.
Why does urine volume decrease as concentration increases?
ADH increases the permeability to water of the distal convoluted tubule and collecting duct, which are normally impermeable to water. This effect causes increased water reabsorption and retention and decreases the volume of urine produced relative to its ion content.