Which of the following is regulated by the kidneys?
water content of the blood
blood pH level
blood ion concentration
all of the above
The medial surface of each kidney has a notch called the
medulla
cortex
hilum
pelvis
At the beginning of the plumbing system of the urinary system, urine leaving the renal papilla is collected in the cuplike structures called
renal columns
renal pyramids
calyces
ureters
The functional unit of the kidney is the
renal carpuscle
nephron
juxtaglomerular apparatus
Bowman's capsule
Which of the following is a component of the renal corpuscle?
a. glomerulus
b. Bowman's capsule
c. afferent arteriole
d. both a & b
Which of the following structures secretes renin when blood pressure in the afferent arteriole drops?
renal tubule
proximal convoluted tubule
renal tubule and juxtaglomerular apparatus
Substances pass from the glomerulus and into the Bowman's capsule by
diffusion
active transport
filtration
osmosis
The juxtaglomerular cells reside in the
afferent arteriole
efferent arteriole
distal convoluted tubule
The left kidney is often slightly larger and positioned slightly lower than the right kidney
Blood is brought to the kidneys by the renal vein
Micturition and urination are synonymous
The glomerulus is one of the most important capillary networks for survival
Once urine enters the renal pelvis, it travels to the renal calyces
As the basic functional until of the kidney, the nephron's function is blood processing and urine formation
The kidneys are covered with visceral pertoneum
Which of the following is not one of the processes of urine formation
reabsorption
secretion
The movement of water and solutes from the plasma in the glomerulus, across the glomerular-caspular membrane, and into the capsular space of the Bowman's capsule is termed:
The movement of molecules out of the peritubular blood and into the tubule for excretion is
Which of the following is considered a countercurrent structure
glomerulus
Henle loop
Proximal convoluted tubules reabsorb nutrients from the tubule fluid, notably glucose and amino acids, into peritubular blood by a special type of active transport mechanism called sodium contransport
Fluid exiting the Henle loop becomes less concentrated with Na+ and Cl- ions
A hydrostatic pressure gradient drives the filtration out of the plasma and into the nephron
The efferent arteriole has a lager diameter than the afferent arteriole
In the renal tubule, Na+ is reabsorbed via active transport
Glomerular filtration separates only harmful substances from the blood
Urine consists of approximately 75% water
Urine has a pH of 4.6 to 8.0 and is generally alkaline
More than 99% of filtrates must be reabosorbed from the tubular segments of the nephron.
Hydrogen ions are transferred from blood into the urine during which of the following processes?
Which of the following steps involved in urine formation allows the blood to retain most body nutrients?
Voluntary control of micturition is achieved by the action of which of the following?
internal urethral sphincter
external urethral sphincter
trigone
bladder muscles
What is the structure that carries urine from the kidney to the bladder called?
urethra
ureter
renal pelvis
What are the capillary loops contained within Bowman's capsule called?
convoluted tubules
glomeruli
limbs of Henle
collecting ducts
The trigone is located in the
kidney
bladder