Renal Embryology Flashcards Preview

Renal Midterm > Renal Embryology > Flashcards

Flashcards in Renal Embryology Deck (82)
Loading flashcards...
1

What portion of the embryo do the kidneys come from

Intermediate mesoderm

2

Where is the intermediate mesoderm located

Immediately lateral to the somites

3

What portion of the kidneys develops first

Urinary system

4

Where does the urogenital ridge form

On each side of the dorsal aorta

5

Where does the nephrogenic cord form from

Urogenital ridge

6

What does the nephrogenic cord give rise to

Pronephros, mesonephros, metanephros

7

What portion of the nephrogenic cord forms the permanent kidneys

Metanephros

8

What is the general order of development of the kidneys

Urogenital ridge —> neprhogenic cord —> pronephros —> mesonephros —> metanephros

9

When does the pronephros form

Early in the 4th week in the cervical region

10

What does the cloaca handle

Gives off urinary and GI waste

11

What does the pronephric ducts dump into the

Cloaca

12

What does the cloaca form in mature adults

Bladder

13

When does the pronephros degenerate

24-25 days

14

What initiates the cascade leading to the formation of the kidney

Pronephros

15

When does the mesonephros appear

Late in the 4th week and below the pronephros

16

Do the mesonephric ducts or tubules develop first

Ducts

17

What induces the tubules to form from the intermediate mesoderm

Mesonephric ducts

18

Mesonephric tubules form the what in mature kidneys

Glomerular capsule

19

When do the mesonephric tubules function as interim kidneys

6-10 weeks

20

When do the mesonephric tubules stop functioning? When do they degenerate

10 weeks in females; forms efferent ductules in males

12 weeks

21

When do the metanephros arise

5 weeks

22

What does the caudal end of each mesonephric duct induce

Ureteric bud

23

What are the 2 parts of the metanephros

Ureteric bud and metanephric blastema

24

Where does the metanephric blastema grow from

Nephrogenic cord

25

How does the metanephros form

Reciprocal induction which is essential to proper development

26

When does the functional and definitive kidney form

9-10th week

27

What does the ureteric bud form

Penetrates the blastema and forms the renal pelvis

28

What does the stalk of the ureteric bud become

Ureters

29

What do the first 4 generations of the collecting tubules form? Next 4?

Major calices; minor calices

30

What does the arched collecting tubule induce the metanephrogenic blastema to form

Metanephric vesicles