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Anatomy - Large Animal > Urogenital > Flashcards

Flashcards in Urogenital Deck (69)
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1

Where is the urogenital ridge found?

in the dorsal part of the embryologic kidney

2

What are the 3 attempts to make the kidney called?

pronephros mesonephros metanephros

3

Where does the pronephric attempt occur?

most cranial attempt; in the neck

4

What does the pronephric attempt become?

the mesonephric duct

5

How does the mesonephros attempt of the kidney degrade?

once it reaches its maximum size, it degenerates from cranial to caudal

6

How many tubules of the pronephric attempt form a duct?

seven to eight

7

What is another name for the mesonephric duct?

Wolffian duct

8

How many tubules of the mesonephric attempt form a duct?

70-80

9

In amphibians and fish, which attempt becomes the adult kidney?

the mesonephros

10

What is the metanephros?

the attempt of kidney creation that becomes the adult kidney

11

What structures create the adult kidney?

the metonephric diverticulum and the metonephrogenic mass

12

Where is the metonephric diverticulum located?

comes off of the mesonephric duct

13

What does the metonephric diverticulum differentiate the surrounding mesoderm into?

the metanephrogenic mass

14

What does the metanephrogenic mass give rise to?

the urine conducting part of the kidney (functional unit)-ureter, renal pelvis, calyxes and collecting ducts

15

How are nephrons formed?

metanephric diverticulum causes areas within the metanephrogenic mass to differentiate into renal vesicles which will transition into metanephric tubules which creates nephrons

16

What cases variations in kidneys between species?

the differences between interactions of the metanephrogenic mesenchyme and the metanephric diverticulum

17

What does the bladder develop as an extension of?

the urachus and the cranial end of the urogenital sinus

18

What does the urogenital sinus become in the male?

pelvic urethra and penile urethra

19

What does the urogenital sinus become in the female?

pelvic urethra, vestibule and the caudal vagina

20

In early development, what does the mesonephric duct go into?

it goes directly into the bladder

21

What does the mesonephric duct become in the adult?

the ductus deferens in males

22

What does the metanephric diverticulum become in the adult?

the ureter, pelvis, calyces, papillary ducts, and collecting tubules

23

How does the mesonephric duct and the metanephric diverticulum become in the correct places that they should be in the adult?

the bladder grows dorsally so that the future ureter and ductus deferens empty into it separately, and then differential growth causes them to switch places so that the ureter empties into the bladder and the ductus deferens empties into the urethra

24

ectopic kidneys

the kidney could be sitting in the pelvic cavity

25

patent urachus

when the urachus does not close right after birth and urine still flows through the allantoic cavity

26

ectopic ureter

when the ureter is not opening in the correct location

27

What structure gives rise to male structures?

mesonephric duct

28

What structure gives rise to female structures?

paramesonephric duct

29

What suppresses the paramesonephric duct in males?

the mullerian inhibiting substance and testosterone

30

What are the gondal cords formed by?

disintegrating mesonephric tubules