Development of the Urinary system Flashcards
The urinary system develops mainly from /
intermediate mesoderm
the coelomic epithelium helps give rise to what part of the urinary system ?
connective tissue of the ducts
where does the first kidney form ?
cervical region
what are the three stages of kidney development
pronephros, mesonephros and metanephros
when does pronephros form
weeks 3-4
when does mesonephros form
weeks 4-8
where does the mesomephros form ?
lumbar region to 9th rib
what is responsible for pushing the GI tract out of abdomen
growth of the urogenital ridge
when does metanephros form
weeks 5 and on
where does metanephros form
sacral region
what is the outgrowht of mesonephric duct called
ureteric bud
the intermediate mesodern in the sacral region is called
ureteric mesoderm
permanent kidney is derived from both
ureteric bud and metanephric mesoderm
the ureteric bud gives rise to what parts of the kidney
ureter, renal pelvis, major and minor calyces and 1-3 million collecting tubules
Metatphric mesoderm gives rise to
bowman’s capsule, proximal convoluted tubule, loop of henle, and the distal convoluted tubule
collecting tubules are covered with
metanephric tissue
what causes the metanephric tissue to differentiate
collecting tubule
angiogenic mesoderm gives rise to
glomeruli and vasa recta
when you are born where does the hilum of the kidney face ?
medially
the urinary bladder is continuous with what structure
allatois
what is the wolffian duct
mesonphric duct
trigone
derived from mesoderm of the mesophnephric ducts, becomes overgrown by endoderm of the bladder
prostate
develops from endodermal outgrowths from the urethra; surrounding mesenchyme forms the stroma and smooth muscle
the cortex of the suprarenal gland is derived from
mesenchyme
the medulla of the suprarenal gland is derived from
neural crest cells
abnormal increase in size of suprarenal gland results in
excessive androgen production leading to masculinziation of female external genitalia
what is WILMS timor
congenital tumor of the kidney
WAGR syndrome
wilms tumor
anridia (no iris)
genito-urinary/gonadoblastoma
mental retardation
renal agenesis
occurs when the uteric bud fails to reach the metanephric mesoderm associated with oligohydramnios
what artery is involved in the horseshoe kidney
inferior mesenteric artery
