Ch. 26 Flashcards
urinary system eliminates
organic wastes, toxins, drugs
urinary system conserves
valuable nutrients by preventing their excretion
urinary system assists liver in
detoxigying poisons and deaminating amino acids
urinary system regulates plasma
concentrations of vital ions
kidney primary layers of tissue deep to super
fibrous capsule
perinephric fat
renal fascia
kidney point of entry/exit for renal artery, renal vein, and ureter
hilum
3 distinct inner regions of kidnys
renal cortex
renal medulla
renal pelvis
renal cortex seperates
renal pyramids
kidneys blood supply
1.2 l per minute
blood carried into kidney via
renal artery
after blood carried into kidney from renal artery it branches to the
afferent arterioles
after afferent arterioles blood goes into
glomerulus
after glomerulus blood goes into the
efferent arteriole
after efferent arteriole the kidney blood enters the
pertibuluar capillaries
after blood enters the peritubular capillaries it goes into the
venules
venules lead to the
renal vein
basic structural and functional units of the kidneys
nephrons
collects fluid moleucles from blood to filtrate
glomerular bowmans capsule
flow of filtrate
glomerular capsule
proximal convoluted tubule
nephron loop of henle
distal convoluted tubule
collecting ducts
minor calyx
major calyx
renal pelvis
ureter
how many nephrons per kidney
1 milli
about 85 percent of nephrons are
cortical nephrons
long nephron loops
juxtamedullary nephrons
important for producing highly concentrated urine
juxtamedullary nephrons
along renal tubule
useful organic substrates reabsorbed
are fed by afferent arterioles and drained by efferent arterioles
glomeruli
arise from efferent arterioles, surround the renal tubules and empty into venules
pertibular cappillarias
detect changes in na of filtrate
macula densa
provide feedback control between macula densa and juxtaglomerular cells
extraglomerular mesangial cells
smooth muscle cells that secrete renin
juxtaglomerular granular cells
collect urine from kidneys to the urinary bladder
ureters
walls of ureters
mucosa, muscularis, adventitia
what send urine through ureter to posterior wall of urinary bladdedr
peristaltic waves
smooth collapsible musuclar sac for storing urine
urinary bladder
urinary bladder for males
anterior to rectum
superior to prostate gland
urinary bladder for females
anterior to vagina
inferior to uterus
urinary bladder cell types
transitional epitherlium
foour layers of urinary bladder
mucosa
submucosa
detrosuer muscle
serosa
trigone funnels urine into
urethra
urethra sphinters
internal
external
uretheral sphincters
female urethra length
1-1.5 inches
male urethra lengtrh
7-9 in
male urethera includes
prostatic urethra
membranous urethra
spongy urethra