Chapter Questions
Micturition occurs when the contracts.i. detruserb. internal urethral sphincterc. external urethral sphincterd. muscularis of the uretere. all of the above
The compact ball of eapillaries in a nephron is calleda. the nephisin loop.b. the peritubular plexusc. the renal corpuscle.d. the glomerulus.e. the vasa recta.
Which of these is the most abundant nitrogenous waste in the blood?a. uric acidb. ureac. ammoniad. creatininee. albumin
Which of these lies closest to the renal cortex?a. the parietal peritoneumb. the renal fasciac. the fibrous capsuled. the perirenal fat capsulee. the renal pelvis
Most sodium is reabsorbed from the glomerular filtrate bya. the vasa recta.b. the proximal convoluted tubule.c. the distal convoluted tubule.d. the nephron loop.e. the collecting duct.
A glomerulus and glomerular capsule make up onea. renal capsale.b. renal corpuscle.c. kidney lobule.d. kidney Iobe.e. nephron.
The kidney has more than any of the other structures listed.a. arcuate arteriesb. minor calycesc. medullary pyramidsd. afferent arteriolese. collecting ducts
The renal clearance of is normally zero.a. sodiumb. potassiumc. uric acidd. ureae. amino acids
Beavers have relatively little need to conserve water and could therefore be expected to have than humans do.a. fewer nephronsb. longer nephron loopsc. shorter nephron loopsd. longer collecting ductse. longer convoluted tubules
Increased ADH secretion should cause the urine to havea. a higher specific gravity.b. a lighter color.c. a higher pH.d. a lower urea concentration.e. a lower potassium concentration.
The reflex is an autonomic reflex activated by pressure in the urinary bladder.
is the ability of a nephron to adjust its GFR independently of nervous or hormonsl influences.
The two ureters and the urethra form the boundaries of a smooth area called the on the floor of the urinary bladder.
The is a group of epithelial cells of the nephron koop that monitors the composition of the tubular fluid.
To enter the capsular space, filtrate must pass hetween foot processes of the cells that form the visceral layer of the glomerular capsule.
Glycosuria occurs if the rate of glomerular filtration of glucose exceeds the of the proximal convoluted tubule.
is a hormone that regulates the amount of water reabsorbed by the collecting duct.
The sphincter of the male is under imvoluntary control and relaxes during the micturition reflex.
Very little is found in the glomerular filtrate because it is negatively charged and is repelled by the basement membrane of the glomerulus.
Blood flows through the arteries just before entering the cortical radiate arteries