Immediately before blood enters arterioles of the kidney, it travels through small arteries that
project peripherally into the renal cortex. These arteries are the ** Answer** interlobular
arteries.
The first structure in the kidney to collect newly formed urine is the ** Answer** minor
calyx.
As blood flows through the vasa recta alongside the ascending limb of the nephron loop, the
blood is flowing ** Answer** deep into the medulla.
The active transport of solutes out of the blood and into the tubular fluid is called ** Answer**
tubular secretion.
Glomerular hydrostatic pressure is the pressure of ** Answer** blood in the glomerular
capillaries.
Mesangial cells help keep the basement membrane clean by ** Answer** engulfing
macromolecules caught in its basement membrane.
Autonomic innervation of the kidney includes ** Answer** Cranial Nerve X and
sympathetic nerves from T10-T12.
Peritubular capillaries tend to exhibit ** Answer** low hydrostatic pressure and high colloid
pressure
Where are the renal pyramids located within the kidney? ** Answer** Renal medulla
,Pain from the kidneys is usually referred by way of the: ** Answer** sympathetic pathways
to the T10-T12 dermatomes.
Stimulation of granular cells by the sympathetic nervous system causes them to ** Answer**
contract
Pregnancy tests often involve checking the urine for the presence of ** Answer** human
chorionic gonadotropin.
Careful measurements of GFR are made by injection of _______, but approximations of GFR
can be made more simply by measuring renal plasma clearance of _________. ** Answer**
inulin;
creatinine
The capsular hydrostatic pressure is generally ______ than the glomerular hydrostatic pressure;
increases in capsular hydrostatic pressure _________ the formation of additional filtrate. **
Answer** smaller;
impede
Which class of nephron is crucially important in establishing a salt concentration gradient in the
kidney so that urine concentration can be regulated? ** Answer** Juxtamedullary nephrons
Which is not correct regarding nephrons? ** Answer** The renal corpuscle may be located
in the renal cortex or renal medulla.
The renal threshold of a substance refers to ** Answer** the plasma concentration of the
substance below which it does not appear in the urine
Renal plasma clearance ** Answer** is the volume of plasma that can be entirely cleared of
a substance in one minute.
,How are nephrons, collecting ducts, and collecting tubules related to each other? ** Answer**
One nephron drains into one collecting tubule, and several collecting tubules empty into a
collecting duct.
The renal corpuscle is located within the ** Answer** renal cortex
For glucose to be reabsorbed from the tubule lumen, it is transported into the tubule cell by
means of a ** Answer** Na+/glucose symporter.
The kidneys are located ___________ the peritoneum. ** Answer** posterior to
The average adult kidney weighs about 100 grams and measures about ** Answer** 12 cm
long, 6.5 cm wide, and 2.5 cm thick.
Which is not a function of the kidneys? ** Answer** Regulation of lymphocyte production
Micturition ** Answer** All of the choices are correct.
- Is another name for urination.
- Is a reflex triggered by stretch receptors in the urinary bladder.
- Requires the opening of two sphincters.
- Requires contraction of the muscularis layer of the urinary bladder.
Generally, negatively charged plasma proteins are ** Answer** repelled by the negative
charge of the filtration membrane
The normal pH for urine ** Answer** ranges between 4.5 and 8.0
Which type of distal cell within kidney tubules and collecting ducts are responsive to aldosterone
and antidiuretic hormone? ** Answer** Principal cells
, An obstruction in the glomerulus would affect the flow of blood into the ** Answer**
efferent arteriole.
Granular cells synthesize and release the enzyme ** Answer** renin
If the filtration membrane were made more porous, how would you expect the glomerular
filtration rate to change? ** Answer** Increase
Someone with a diet that is high in vegetables but low in animal protein is likely to have very
active ** Answer** type B cells, which secrete HCO3- and reabsorb H+.
The endothelium of the glomerulus is made up of _________ capillaries. ** Answer**
fenestrated
Generally, most water reabsorption in a nephron occurs at the ** Answer** proximal
convoluted tubule and is called obligatory water reabsorption.
*Which of the following choices lists structures in the order in which urine flows through them?
** Answer** *Minor calyx,
major calyx,
renal pelvis
ANP is a hormone that causes ** Answer** dilation of the afferent arterioles and inhibition
of renin release
The juxtaglomerular apparatus is located ** Answer** near the vascular pole of the renal
corpuscle.
Sympathetic stimulation causes ** Answer** granular cells to release renin, which ultimately
leads to mesangial cell contraction