Urogenital System

Question 0

What are the three kidney systems

Answer 0

Pronephros
Mesonephros
Metanephros

Question 1

The urinary and genital system both develop from what

Answer 1

Intermediate mesoderm

Question 2

What is important about the Pronephros system

Answer 2

Nothing
Nonfunctional
Gone by fourth week

Question 3

What is important about the mesonephros system

Answer 3

Develops mesonephric/Wolffian duct that excretory tubules run into
In males this will become part of genitalia
Develops mesonephros on medial side (large organ)

Question 4

Why is the metanephros system important

Answer 4

It’s the permanent kidney

Question 5

Where does the collecting duct system develop from

Answer 5

Ureteric bud

Question 6

What branches form what from the ureteric bud

Answer 6

1st= major calyces
2nd, 3rd, and 4th = minor calyces
Subsequent= renal pyramids

Question 7

The uterine bud overall gives rise to what structures

Answer 7

Ureter
Renal pelvis 
Major calyx
Minor calyx
All collecting ducts and tubules

Question 8

What is derived from metanephric mesoderm

Answer 8

Excretory units

Nephrons

Question 9

True or false: you are growing more nephrons in childhood

Answer 9

False

Question 10

Wilm’s tumor?

Answer 10

It’s a pediatric renal tumor

Question 11

Potter’s syndrome?

Answer 11

Renal agenesis

Lack of formation of a kidney

Question 12

What are the two forms of congenital polycystic kidney disease

Answer 12

Autosomal recessive (infantile form/ collecting ducts)
Autosomal dominant (adult form/ all of nephron)

Question 13

How do you get a partial or complete ureter duplication

Answer 13

The uteric bud branches too early

Question 14

What is the main problem with ascent of the kidney

Answer 14

It can get caught on umbilical arteries

Question 15

The cloaca divides into what two parts by the urorectal sinus

Answer 15

Urogenital sinus
Anal canal
The perineal body is the tip of the urorectal sinus

Question 16

What are the three parts of the urogenital sinus

Answer 16

Urinary bladder
Pelvic part
Phallic part

Question 17

The allantois obliterates from the bladder and leaves what structure

Answer 17

Urachus that becomes median umbilical ligament

Question 18

When the ureters are incorporated into the bladder and separated from the mesonephric ducts, what do the mesonephric ducts become

Answer 18

Ejaculatory ducts in males

Question 19

What does the pelvic part of the urogenital sinus become in males

Answer 19

Prostatic and membranous urethra

Question 20

What does the phallic part of urogenital sinus become in males

Answer 20

Penile urethra

Question 21

Outgrowths from the prostatic urethra/ urethral epithelium form what

Answer 21

Prostate

Or urethral and paraurethral glands

Question 22

What gene is on the Y chromosome that is key to male dev?

Answer 22

SRY gene

Question 23

Whe do gonads acquire male or female characteristics

Answer 23

7th week

Question 24

What is the indifferent gonad?

Answer 24

The primitive sex cords

Question 25

What will the primitive cords become in males

Answer 25

Testis / rete testis

Question 26

When do leydig cells start producing testosterone

Answer 26

8th week

Question 27

When do the testis cords become seminiferous tubules

Answer 27

At puberty

Question 28

Where are the Ductuli efferentes derived from

Answer 28

The excretory tubules of the mesonephric duct (Wolffian duct)

Question 29

What is derived from the Wolffian duct

Answer 29

Epididymus Ductus deferens Seminal vesicle

Question 30

Where do the primitive sex cords go in females

Answer 30

Separate into separate cell clusters in medulla of ovary and later disappear

Question 31

How does the cortex of the ovary form

Answer 31

Surface epithelium proliferates forming cortical cords These cords split into cell clusters each surrounding a germ cell This becomes a follicle

Question 32

What forms the uterine canal and the Fallopian tubes

Answer 32

Müllerian or paramesonephric ducts

Question 33

As soon as the paramesonephric duct contacts the urogenital sinus (after forming uterus) what happens

Answer 33

A solid canal of tissue forms below it that will canalize and for the vagina

Question 34

What is the origin of the vagina

Answer 34

Paramesonephric ducts | Urogenital sinus

Question 35

What separates the vagina for the urogenital sinus

Answer 35

Hymen

Question 36

The cloacal folds subdivide into what

Answer 36

Urethral folds | Anal folds

Question 37

What do the genital swellings become in males and females

Answer 37

Males- scrotum | Females- labia majora

Question 38

What stimulates the dev of female genitalia

Answer 38

Estrogen

Question 39

What is a failure of the testis to descend

Answer 39

Cryptorchidism