Gross Anatomy Review - Urinary System Embryology

Question 1

Urogenital ridge

Answer 1

From itnermediate mesorderm
Medial part - gonads

Lateral - nephrogenic cord to urinary system

Question 2

Pronephros system

Answer 2

Differetiate into vestigal excretory units

Disappears

Question 3

Mesoneprhos system

Answer 3

Renal corpuscle

Mesonephric duct - final common pathway forr renal corpuscles to the cloaca…in male connects tetis to cloaca

Question 4

PErment kidneys develop from

Answer 4

Ureteric bud - collecting system

Metanephric blastema - exceretory system

Question 5

Ascent of the kidneys

Answer 5

As embryo grows, they ascend and rotate so hilum is medial facing

Question 6

Ectopic kidney

Horseshoe kidney

Answer 6

Ectopic - one or both in abnormal position…most in pelvis

Horshoe - fusion of inferior poles…ascent is not possible because gets caught on mesenteric artery

Question 7

Renal agenesis

Answer 7

Unilateral - asympotatmic and remaining kidney hypertrophies

Bilateral - leads to oligohydramnios…leas to compression of fetus leading to Potter’s syndrome

Question 8

Bifid ureter anomaly

Answer 8

Ureteric bud divides before it enters the metanephric blastema…only one opening of ureter into the bladder

Question 9

Ectopic ureter

Answer 9

Mesoneprhic duct sporouts 2 buds that reach blastema

Cranial ureter may open into an ectopic location

Question 10

Exstrophy of the bladder

Epispadias

Answer 10

Ventral defect in which bladder exposed

Defect in dorsum of the penis…opening of urethra is found on the drosal surface of the penis

Question 11

Hypospadias

Answer 11

Ventral wall defect of penis

Failure of urethral folds to fuse along midline