Urinary Development

Question 1

Urinary and reproductive systems come from

Answer 1

Urogenital ridge of intermediate mesoderm

Question 2

3 kidney systems

Answer 2

Pronephrous
Mesonephros
Metanephros system

Question 3

Mesoneprhic ducts

Answer 3

Run from cranial to caudal end

Fuse with cloaca

Question 4

Pronephros tubes location

Answer 4

Adjacent to mesoneprhic duct

Question 5

Lateral part of urogenital ridge

Answer 5

Mesonephric ridge

Question 6

Mesonephric duct induces formation of

Answer 6

Mesoneprhic tubulus

Question 7

Mesoneprhic tubules differentiate into

Answer 7

Excretory units

Question 8

Medial end of each mesonephric tubule forms

Answer 8

Bowman’s capsule

Question 9

Bowman’s capsule and what it forms

Answer 9

Wraps around glomerulus to form renal corpuscle

Question 10

Lateral end of mesoneprhic tubule

Answer 10

Fuses to mesonephric duct…opening a passage from excretory units to cloaca

Question 11

Two portions of metanephros

Answer 11

Ureteric bud 
Metaneprhic blastema (most sacral)

Question 12

Ureteric bud forms and induces

Answer 12

Collecting portions of the kidney (down to ureter)

Induces formation of metanetphric blastema

Question 13

Metanephric blastema forms

Answer 13

Bowman’s capsule
Prox con tub
Loop of hen
Distal conv

Question 14

Major function of fetal urine

Answer 14

Supplement production of amniotic fluid

Question 15

Renal agenesis results in

Answer 15

Oligohydramnios (lack of amniotic fluid)

Question 16

Oligohydramnios can result in

Answer 16

Potter sequence

Question 17

Bifid ureter anomaly

Answer 17

Ureteric bud divides before entering metanephric blastema

Only one opening into bladder though

Question 18

Kidney moves from where to where?

Answer 18

From sacral to lumbar

Question 19

Renal ectopia

Answer 19

Kidney may not ascend

Question 20

Renal fusion

Answer 20

Inferior poles of metanephros fuse as they crosss aorta

Question 21

Horseshoe kidney

Answer 21

Result of renal fusion

Gets caught on inferior mesenteric artery

Question 22

Urogenital sinus upper part becomes

Answer 22

Bladder

Question 23

Urogenital sinus pelvic part

Answer 23

Prostatic and membranous urethra

Question 24

Phallic pat of urogenital sinus

Answer 24

Penile urethra (male)
Opens to vestibule (female)

Question 25

Mesonephric ducts form which part of bladder?

Answer 25

Trigone

Question 26

Terminal portion of mesonephric ducts

Answer 26

Incorporated into the wall of bladder

Question 27

Mesonephric ducts become

Answer 27

Ductus deferens (male)
Regress (female)

Question 28

How do ureters become attached to posterior part of bladder?

Answer 28

Mesonephric ducts begin to move inferior on the bladder

Question 29

Ectopic ureter

Answer 29

Cranial ureter moves past caudal ureter and opens into ectopic location
Males-membranous/prostatic urethra
Female: vestibule/vagina

Question 30

Prostate from

Answer 30

Endoderm envaginations of pelvic part of urogenital sinus

Question 31

Seminal vesicles from

Answer 31

Mesoneprhic ducts near pelvic urethra

Question 32

Bulbourethral glands from

Answer 32

Endoderm invaginations just inferior to prostate

Question 33

Exstrophy of the bladder

Answer 33

Ventral wall defect in which bladder exposed

Includes Epispadias

Question 34

Epispadis

Answer 34

Defect in dorsum of the penis…opening of urethra found on dorsum of the penis

Question 35

Apex of bladder initally continuous with allantois until

Answer 35

Allantois becomes urachus

Question 36

Urachal cyst

Answer 36

Sinus or sinuses remaining from allantois (could become infected)

Question 37

Urachal fistula

Answer 37

Entire urachus remains patent

Question 38

Fetal suprarenal cortex formed from

Answer 38

Mesoderm between mesnetery and urogenital ridge

Question 39

Adrenal medulla develops from

Answer 39

Neural crest cells

Question 40

Neural crest cells differentiate into

Answer 40

Epineprhine containing cells (chromaffin cells)