Flashcards in Urinary System Dr. Yan Deck (70)
Where does the urinary system originate from?
What are the three successive kidneys?
Where does the pronephros come from and is it functional?
cervical region, non functional
How long does the pronephros exist for?
only during week 4
When does the mesonephros appear and disappear?
appears at week 4 and disappears at end of 2 months (except for mesonephric duct in males)
Where does the mesonephros com form?
When does the metanephros appear?
which kidney is the definitive kidney?
Which kidney is the inducer?
Where does the mesonephros kidney originate from?
Describe the process occurring at week 4 starting with the excretory tubule?
excretory tubule-> glomerulus and bowman's corpuscle= renal corpuscle-> mesonephric (Wolffian) duct
What does the renal corpuscle turn into during week 4?
What does the urogential ridge begin to turn into at the 2nd month?
By the end of the 2nd month, (blank) in the males go to ejaculatory duct and females disappear
Is the second kidney functional?
When does the metanephros (definitive kidney) appear?
Ureteric bud outgrown from the mesonephric duct penetrate metanephric tissue and induces (blank)
metanephric blastema (from intermediate mesoderm).
the ureteric bud continues to divide to form what?
ureter, renal pelvis, major and minor calyces, and collecting tubules
when do you get the creation of the ureter and renal pelvis?
When do you get the creation of the minor and major calyxes?
When do you get the creation of the collecting tubules?
What make the renal pyramids?
What is formed by the metanephric mesoderm induced by ureteric bud?
What is the filtration system formed by?
metanephric mesoderm induced by uretic bud
Describe the formation of the filtration system?
metanephric tissue cap-> renal vesicles-> s-shaped tubule-> capillaries grow into-> glomeruli
What is the excretory unit?
What creates the metanephric tissue caps?
the endothelium secretes signals to induce formation of the mesenchymal cells to turn into metanephric tissue caps
kidney development is dependent upon (blank).
epithelial mesenchymal interactions
(blank), expressed in mesenenchyme, stimulate branching and growth of the ureteric bud.