Flashcards in Histo Urinary System Deck (162)
What are the components of the urinary system?
kidneys and urinary tract
What is the function of the kidneys?
filtration – kidney glomeruli
selective resorption and excretion – kidney tubular system
synthesis of renin (regulates blood pressure via renin-angiotensin system)
synthesis of erythropoietin (regulates RBC production via [O2]
produced by interstitial fibroblast of the kidney
activates Vitamin D3
In the kidney, what is responsible for filtration?
In the kidney, what is responsible for resorption and excretion?
kidney tubular system
In the kidney,what is responsible for the synthesis of renin?
In the kidney, what is responsible for the synthesis of erythropoietin?
interstital fibroblast of kidney
What regulates bloodpressure via the RAAS?
What regulates RBC production via decreased amount of Oxygen?
What activates vitamin D3?
Is the kidney encapsulated?
What is in the cortex of the kidney?
renal corpuscles or glomeruli
cortical labyrinth and medullary rays
How many medullary rays are then in a human kidney?
What do medullary rays look like?
almost like the splenic cords, long and dark and longitduinal
What do cortical labyrinths look like?
like swirlies filled with corpuscles
How many renal lobes/pyramids of the medulla are there?
What does the base of a renal pyramid form?
the corticomedullary border
What is the rounded off end of a renal pyramid?
a renal papilla
Renal papilla drain up to (blank) collecting ducts/ducts of bellin
What does a kidney lobe refer to?
medullary pyramid + overlying cortex
What does a kidney lobULE refer to?
a group of nephrons that open into branches of the same main collecting duct.... space between 2 interlobular arteries
How does the kidney regulate hematopoiesis?
secretion of erythropoieten
Where are the renal corpuscles and glomeruli found?
What does the nephron consist of?
Renal corpuscle (glomerulus) and kidney tubules (PCT, Loop of Henle, DCT)
Each kidney has more than (blank) nephrons
What happens in the nephron?
filtration , excrection and reabsorption
What is a uriniferous tubule?
nephron plus colleting duct
The end of renal papilla resemble a strainer and is called (blank)
What does a renal corpuscle consist of?
Bowmans capsule and glomerulus
What do arcuate vessels do?
separate cortex from medulla