Quiz 9 Flashcards
What is the best explanation for the microvilli on the apical surface of the proximal convoluted tubule (PCT)?
They increase the surface area and allow for a greater volume of filtrate components to be reabsorbed.
The mechanism of water reabsorption by the renal tubules is ________.
osmosis
The mechanism that establishes the medullary osmotic gradient depends most on the permeability properties of the ________.
nephron loop
Reabsorption of sodium in the medulla by active transport is undertaken by cells that compose which of the following?
ascending nephron loop
Which of the following is the primary function of the juxtaglomerular complex?
releases chemical signals that regulate the rate of filtrate formation
What would happen if the capsular hydrostatic pressure were increased above normal?
Net filtration would decrease.
Which hormone is most responsible for reabsorption of sodium, secretion of potassium and maintenance of blood volume?
aldosterone
T/F
Part complete
Filtrate becomes less concentrated as it flows down the medullary collecting ducts, toward the renal pelvis.
False
T/F
Part complete
Filtrate becomes less concentrated as it flows down the medullary collecting ducts, toward the renal pelvis.
False
Relaxation of the __________, a skeletal muscle under conscious control, allows urine to leave the bladder during micturition.
external urethral sphincter
Renal clearance tells us
how a substance is handled by the kidney.
If one says that the clearance value of glucose is zero, what does this mean?
100% of glucose is reabsorbed.
