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Flashcards in Urinary Development Deck (40)
1

Urinary and reproductive systems come from

Urogenital ridge of intermediate mesoderm

2

3 kidney systems

Pronephrous
Mesonephros
Metanephros system

3

Mesoneprhic ducts

Run from cranial to caudal end
Fuse with cloaca

4

Pronephros tubes location

Adjacent to mesoneprhic duct

5

Lateral part of urogenital ridge

Mesonephric ridge

6

Mesonephric duct induces formation of

Mesoneprhic tubulus

7

Mesoneprhic tubules differentiate into

Excretory units

8

Medial end of each mesonephric tubule forms

Bowman's capsule

9

Bowman's capsule and what it forms

Wraps around glomerulus to form renal corpuscle

10

Lateral end of mesoneprhic tubule

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

11

Two portions of metanephros

Ureteric bud
Metaneprhic blastema (most sacral)

12

Ureteric bud forms and induces

Collecting portions of the kidney (down to ureter)
Induces formation of metanetphric blastema

13

Metanephric blastema forms

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

14

Major function of fetal urine

Supplement production of amniotic fluid

15

Renal agenesis results in

Oligohydramnios (lack of amniotic fluid)

16

Oligohydramnios can result in

Potter sequence

17

Bifid ureter anomaly

Ureteric bud divides before entering metanephric blastema
Only one opening into bladder though

18

Kidney moves from where to where?

From sacral to lumbar

19

Renal ectopia

Kidney may not ascend

20

Renal fusion

Inferior poles of metanephros fuse as they crosss aorta

21

Horseshoe kidney

Result of renal fusion
Gets caught on inferior mesenteric artery

22

Urogenital sinus upper part becomes

Bladder

23

Urogenital sinus pelvic part

Prostatic and membranous urethra

24

Phallic pat of urogenital sinus

Penile urethra (male)
Opens to vestibule (female)

25

Mesonephric ducts form which part of bladder?

Trigone

26

Terminal portion of mesonephric ducts

Incorporated into the wall of bladder

27

Mesonephric ducts become

Ductus deferens (male)
Regress (female)

28

How do ureters become attached to posterior part of bladder?

Mesonephric ducts begin to move inferior on the bladder

29

Ectopic ureter

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

30

Prostate from

Endoderm envaginations of pelvic part of urogenital sinus

31

Seminal vesicles from

Mesoneprhic ducts near pelvic urethra

32

Bulbourethral glands from

Endoderm invaginations just inferior to prostate

33

Exstrophy of the bladder

Ventral wall defect in which bladder exposed
Includes Epispadias

34

Epispadis

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

35

Apex of bladder initally continuous with allantois until

Allantois becomes urachus

36

Urachal cyst

Sinus or sinuses remaining from allantois (could become infected)

37

Urachal fistula

Entire urachus remains patent

38

Fetal suprarenal cortex formed from

Mesoderm between mesnetery and urogenital ridge

39

Adrenal medulla develops from

Neural crest cells

40

Neural crest cells differentiate into

Epineprhine containing cells (chromaffin cells)