Urogenital System
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What are the three kidney systems
Pronephros Mesonephros Metanephros
The urinary and genital system both develop from what
Intermediate mesoderm
What is important about the Pronephros system
Nothing Nonfunctional Gone by fourth week
What is important about the mesonephros system
Develops mesonephric/Wolffian duct that excretory tubules run into In males this will become part of genitalia Develops mesonephros on medial side (large organ)
Why is the metanephros system important
It’s the permanent kidney
Where does the collecting duct system develop from
Ureteric bud
What branches form what from the ureteric bud
1st= major calyces 2nd, 3rd, and 4th = minor calyces Subsequent= renal pyramids
The uterine bud overall gives rise to what structures
Ureter Renal pelvis Major calyx Minor calyx All collecting ducts and tubules
What is derived from metanephric mesoderm
Excretory units Nephrons
True or false: you are growing more nephrons in childhood
False
Wilm’s tumor?
It’s a pediatric renal tumor
Potter’s syndrome?
Renal agenesis Lack of formation of a kidney
What are the two forms of congenital polycystic kidney disease
Autosomal recessive (infantile form/ collecting ducts) Autosomal dominant (adult form/ all of nephron)
How do you get a partial or complete ureter duplication
The uteric bud branches too early
What is the main problem with ascent of the kidney
It can get caught on umbilical arteries
The cloaca divides into what two parts by the urorectal sinus
Urogenital sinus Anal canal The perineal body is the tip of the urorectal sinus
What are the three parts of the urogenital sinus
Urinary bladder Pelvic part Phallic part
The allantois obliterates from the bladder and leaves what structure
Urachus that becomes median umbilical ligament
When the ureters are incorporated into the bladder and separated from the mesonephric ducts, what do the mesonephric ducts become
Ejaculatory ducts in males
What does the pelvic part of the urogenital sinus become in males
Prostatic and membranous urethra
What does the phallic part of urogenital sinus become in males
Penile urethra
Outgrowths from the prostatic urethra/ urethral epithelium form what
Prostate Or urethral and paraurethral glands
What gene is on the Y chromosome that is key to male dev?
SRY gene
Whe do gonads acquire male or female characteristics
7th week