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GCU BIO 202 Exam 4 Questions 100% Correct Answers New Update

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GCU BIO 202 Exam 4 Questions 100% Correct Answers New Update autoregulation - Answers - maintains GFR despite changes in local blood pressre and blood flow autoregulation - Answers - changes diameters of afferent and efferent arterioles and glomerular capillaries dilation - Answers - autor...

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  • February 4, 2025
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GCU BIO 202 Exam 4 Questions
100% Correct Answers New
Update
autoregulation - Answers -✔✔ maintains GFR despite changes in local blood pressre
and blood flow

autoregulation - Answers -✔✔ changes diameters of afferent and efferent arterioles
and glomerular capillaries

dilation - Answers -✔✔ autoregulation: reduced blood flow or glomerular blood
pressure triggers _______ of afferent arterioles

dilation - Answers -✔✔ autoregulation: reduced blood flow or glomerular blood
pressure triggers _______ of glomerular capillaries (by contraction of mesangial cells)

constriction - Answers -✔✔ autoregulation: reduced blood flow or glomerular blood
pressure triggers _______ of efferent arterioles

stretches - Answers -✔✔ rise in renal blood pressure _______ walls of afferent
arterioles

contract - Answers -✔✔ rise in renal blood pressure causes juxtaglomerular cells to
_______

constricts - Answers -✔✔ rise in renal blood pressure _______ afferent arterioles

decreases - Answers -✔✔ rise in renal blood pressure _______ glomerular blood flow

yes - Answers -✔✔ is autoregulation self-regulated?

constricts - Answers -✔✔ autonomic regulation of GFR sympathetic activation _______
afferent arterioles (fight or flight -> exercising)

decreases - Answers -✔✔ autonomic regulation of GFR sympathetic activation
_______ GFR

slows - Answers -✔✔ autonomic regulation of GFR sympathetic activation _______
filtrate production

,decreases - Answers -✔✔ autonomic regulation of GFR sympathetic activation slows
filtrate production _______ blood flow to the glomerulus

exercise - Answers -✔✔ autonomic regulation of GFR sympathetic activation slows
filtrate production i.e. _______

advil - Answers -✔✔ autonomic regulation of GFR sympathetic activation slows filtrate
production, _______ constricts afferent arteriole even more, leading to hypoperfusion of
kidneys and possible renal failure

renin angiotensin - Answers -✔✔ hormonal regulation of GFR by hormones of the
_______ _______ system

natriuretic peptides - Answers -✔✔ hormonal regulation of GFR by hormones of
_______ _______

oppose - Answers -✔✔ hormonal regulation of GFR by hormones of natriuretic
peptides (ANP and BNP) _______ aldosterone secretion

proximal convoluted tubule - Answers -✔✔ reabsorption occurs in what section of the
nephron?

reabsorption - Answers -✔✔ useful materials are recaptured before filtrate leaves
kidneys

filtrate, solute - Answers -✔✔ 60-70% of _______ volume and 99% of _______
reabsorbed in proximal convoluted tubule

simple cuboidal - Answers -✔✔ reabsorption in PCT has what kind of epithelium?

apical - Answers -✔✔ reabsorption in PCT has microvilli on _______ surfaces

pH - Answers -✔✔ reabsorption can adjust _______ in PCT - bicarbonate makes blood
more basic

absorb - Answers -✔✔ tubular cells of PCT _______ organic nutrients, ions, water, and
plasma proteins from tubular fluid

release - Answers -✔✔ tubular cells of PCT _______ them into peritubular fluid and
peritubular capillary

peritubular fluid - Answers -✔✔ interstitial fluid around renal tubule

,reabsorption - Answers -✔✔ tubular cells of PCT CO2 _______ from the tubular fluid
results in 90% of bicarbonate generation and reabsorption from the tubular fluid

secretion - Answers -✔✔ tubular cells of PCT active H+ _______ into the tubular fluid

towards - Answers -✔✔ nephron loop: renal tubule turns _______ renal medulla

plevis - Answers -✔✔ nephron loop: descending limb - fluid flows towards renal
_______

cortex - Answers -✔✔ nephron loop: ascending limb - fluid flows toward renal _______

thin descending segment - Answers -✔✔ nephron loop: water out, more concentrated
urine

thin descending segment - Answers -✔✔ nephron loop: more solute in space aound
limb

thin descending segment - Answers -✔✔ nephron loop: freely permeable to water, not
permeable to solutes

thin descending segment - Answers -✔✔ nephron loop: water osmotically flows out og
the renal tubule into the peritubular fluid

thick ascending segment - Answers -✔✔ nephron loop: pumping solute into space
around limb

thick ascending segment - Answers -✔✔ nephron loop: relativelyy impermeable to
water

thick ascending segment - Answers -✔✔ nephron loop: pumps (active transport)
sodium and chloride ions out of tubular fluid

thick ascending segment - Answers -✔✔ nephron loop: this creates high colute
concentrations in peritubular fluid

nephron loop - Answers -✔✔ osmolarity starts low goes high then back to low in
_______ _______

positive - Answers -✔✔ this system creates a simple _______ feedback loop which
multiplies the concentration difference between the hypotonic tubular flui in the thick
ascending limb and the hypertonic peritubular fluid deep in the renal medulla

, urea - Answers -✔✔ _______ production accounts for approx. half of the solute content
of urine

urea - Answers -✔✔ results from muscle catabolism and breakdown of amino acids
that the body doesn't need

excretion - Answers -✔✔ renal urea _______ muct match the liver production of it

excretion - Answers -✔✔ urea is key in regulating the _______ of water

water - Answers -✔✔ urea is small and _______ soluble

freely - Answers -✔✔ urea is _______ filtered

urea flow - Answers -✔✔ recycled from collecting duct -> peritubular fluid of inner
medulla -> vasa recta blood vessels -> back to glomerulus

hyperosmotic - Answers -✔✔ urea allows the kidneys to create _______ urine (urine
that has more ions in it - is "more conccentrated" - than that same person's plasma)

loops of Henle - Answers -✔✔ urea recycling in the inner medulla also contributes to
the osmotic gradient generated by the ________ _______ _______

increase - Answers -✔✔ ADH _______ water permeability but not urea permeability in
the cortical and outer medullary collecting ducts, causing urea to concentrate in the
tubular fluid in this segment

increases - Answers -✔✔ in the inner medullary collecting ducts ADH _______ both
water and urea permeability, which allows urea to flow passively down its concentration
gradient into the interstitial fluid (this adds to the osmotic gradient and helps drive water
reabsorption)

waste - Answers -✔✔ urea is a _______ product - got to get rid of it

third - Answers -✔✔ distal convoluted tubuler is the _______ segment of the renal
tubule (number)

true - Answers -✔✔ T/F: the initial portion of the DCT passes between afferent and
efferent arterioles

smaller - Answers -✔✔ DCT has a _______ diameter than PCT

fewer - Answers -✔✔ in the DCT, epithelial cells have far _______ microvilli - so less
surface area, less reabsorption

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