Embryology: The GU System Flashcards Preview

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Flashcards in Embryology: The GU System Deck (12)
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1
Q

What tissue does the urogenital system develop from?

A

Mesoderm - the intermediate mesenchyme

2
Q

Which of these is the first system to arise?

A

Urinary System

3
Q

What is the ureteric bud an outgrowth of?

A

Mesonephric Duct

4
Q

When do the external gonads acquire feminine/masculine features?

A

12th week

5
Q

What are the 3 kidney systems in the embryo?

A

Pronephros

Mesonephros

Metanephros

6
Q

What is the fate of the pronephros?

A

Regresses

7
Q

What is the fate of the mesonephros?

A

Mesonephric Tubules - excretory organs and the vas deferens in males

Mesonephric Ducts - gives the ureteric bud & trigone

8
Q

What is the fate of the metanephros?

A

Results in the permanent kidney

Ureteric bud - ureter, renal pelvis, calices & collecting tubules.

Metanephrogenic blastema - the nephrons (the functional unit of the kidney).

9
Q

What are the 3 parts of the urogenital sinus?

A

Vesical - bladder
Pelvis - urethra
Phallic - penis/clitoris

10
Q

What is exstrophy of the bladder?

A

It results from a rare ventral body wall defect through which the posterior wall of the urinary bladder protrudes onto the abdominal wall

11
Q

What is epispadias?

A

The urethra opens on the dorsum of the penis

12
Q

What forms the urachus?

A

The intraembryonic part of the allantois constricting