ch 26 urinary system Flashcards
kidneys
paired organs that produce urine
urinary tract
stores and eliminates urine
urters
paired tubes which take the urine from each kidney to the urinary bladder
urinary bladder
muscular sac for temporary urine storage
urethra
tube that takes urine from the ballder to the outside
functions of the urinary system
excretion
elimination
homeostatic regulation
3 connective tissue layers around kidneys
fibrous capsule
perinephric fat
renal fascia
renal cortex
superfical region
renal medulla
inner region
renal pyramid
triangular structures in the medulla
minor calyx
cup cup-shaped drain that collects urine from ducts that converge at the renal papilla of each renal pyramid
major calyx
larger passageways formed by 4 or 5 minor calyces merging together
nephron
microscopic functional unit of kidneys
renal corpuscle
responsible for filtering blood
what does the renal corpuscle consist of
bowman’s capsule and capillary network
renal tubule
long passageway that consists of proximal convoluted tubule, nephron loop/loop of henle, distal convoluted tubule
glomerular capsule
forms the outer wall of the corpuscle
podocytes
large specialzied cells of the viscera layer
proximal convoluted tubule
the initial segment of the renal tubule responsible for reabsorption and secretion of various solutes and water
loop of henle
u-shaped segment that reabsorb water and sodium chloride from the filtrate, allowing the body to produce concentrated urine
distal convoluted tubule
distal segment that empties into a collecting tubule
juxtaglomerular complex
structure that helps regulate blood pressure and filtrate information
collecting system
series of tubes that carrie tubular fluid away from the nephrons
types of nephrons (2)
cortical
juxtamedullary
