Developement Of Urinary System Flashcards
Between what 2 structures is the intermediate mesoderm found?
Paraxial & lateral plate mesoderm
What are the 2 fundamental structures of the urinary system?
Intermediate mesoderm
Cloaca (common opening- means drain in Latin)
Describe the route of the intermediate mesoderm
Runs along the embryo
From cervical to caudal region
Either side of vertebral column
Protrudes into coelom
What is the cloaca?
A common space where the tail end of gut & urinary system joins. Later splits.
Name the 3 types of developing kidney
Cervical nephrotomes (pronephros)
Mesonephros
Metanephros (makes adult kidney)
What does the ureteric bud grow from?
The medonephric duct
What does the ureteric bug grow in to?
The metanephric blastema
What does the ureteric bud induce in the metanephric blastema?
Nephron differentiation
What does the metanephric blastema induce?
Branching of the ureteric bud
From what does the bladder develop from?
The cloaca
What are the 2 subdivisions of the Cloaca?
Urigenital sinus
Rectum
What forms the trigone?
The mesonephric duct depositing tissue at the back of the bladder
Name urinary abnormalities
Problems with induction
Branching
Blood supply
Ascent
What happens if 1 ureteric bud doesn’t form?
You only have 1 kidney (agenesis)
What is a horseshoe kidney?
When a fused kidney gets trapped under the inferior messengering artery
