BIOL 373 QUIZ 4AB QUESTIONS WITH VERIFIED
ACCURATE ANSWERS
The vasculature of mammalian kidneys is unusual because - Answers - Each nephron
has glomerular and peritublar capillary beds connected by an efferent arteriole
What happens to renal blood flow when the afferent arteriole is constricts? - Answers - It
decreases
What happens to glomerular filtration rate (GFR) when the afferent arteriole constricts? -
Answers - It decreases
What happens to glomerular filtration rate (GFR) when the Efferent arteriole constricts?
- Answers - It increases
In response to an increase in systemic arterial pressure you can predict that... -
Answers - Constriction of afferent arterioles occurs and there is little or no change in
GFR
What part of the nephron tubule is part of the juxtaglomerular apparatus? - Answers -
The ascending limb of the loop of hence where it connects with the distal tubule
Which of the following monitors tubular salt concentrations and can release paracrine
factors that affect afferent arteriole diameter? - Answers - Macula dense cells
As fluid moves within the tubules through the regions of the nephron, the fluid ______ is
the most similar in composition to plasma - Answers - entering the proximal tubule
Na+ - Answers - Is the ion that is commonly linked to indirect active transport during
reabsorption in nephrons
Na+ moves across the apical membrane of epithelial cells of the proximal tubule via -
Answers - - ENac channels
- symporters that couple amino acid and Na+ transport
- sodium-glucose cotransporters (SGLTs)
glucose reabsorption across the epithelium of the proximal tubule is accomplished by ...
- Answers - - transport across the apical membrane AGAINST its concentration
gradient, coupled with Na+
- facilitated diffusion across the basolateral membrane DOWN its concentration gradient
Excretion of significant amounts of protein in the urine.. - Answers - - is most likely due
to an issue with glomerular filtration
ACCURATE ANSWERS
The vasculature of mammalian kidneys is unusual because - Answers - Each nephron
has glomerular and peritublar capillary beds connected by an efferent arteriole
What happens to renal blood flow when the afferent arteriole is constricts? - Answers - It
decreases
What happens to glomerular filtration rate (GFR) when the afferent arteriole constricts? -
Answers - It decreases
What happens to glomerular filtration rate (GFR) when the Efferent arteriole constricts?
- Answers - It increases
In response to an increase in systemic arterial pressure you can predict that... -
Answers - Constriction of afferent arterioles occurs and there is little or no change in
GFR
What part of the nephron tubule is part of the juxtaglomerular apparatus? - Answers -
The ascending limb of the loop of hence where it connects with the distal tubule
Which of the following monitors tubular salt concentrations and can release paracrine
factors that affect afferent arteriole diameter? - Answers - Macula dense cells
As fluid moves within the tubules through the regions of the nephron, the fluid ______ is
the most similar in composition to plasma - Answers - entering the proximal tubule
Na+ - Answers - Is the ion that is commonly linked to indirect active transport during
reabsorption in nephrons
Na+ moves across the apical membrane of epithelial cells of the proximal tubule via -
Answers - - ENac channels
- symporters that couple amino acid and Na+ transport
- sodium-glucose cotransporters (SGLTs)
glucose reabsorption across the epithelium of the proximal tubule is accomplished by ...
- Answers - - transport across the apical membrane AGAINST its concentration
gradient, coupled with Na+
- facilitated diffusion across the basolateral membrane DOWN its concentration gradient
Excretion of significant amounts of protein in the urine.. - Answers - - is most likely due
to an issue with glomerular filtration
