Development of the Kidney and Urinary System

Question 1

What does the ureteric bud give rise to?

Answer 1

Collecting tubules, major and minor calyces, major and minor calyces, renal pelvis, ureter

Question 2

What does the metanephric tissue give rise to?

Answer 2

Nephrons

Question 3

What do the renal and genital systems develop from?

Answer 3

Intermediate mesoderm

Question 4

What is the pronephros?

Answer 4

Non-functional, rudimentary part. Disappears by week 5.

Question 5

What is the mesonephros?

Answer 5

Part that persists in males to make the vans deferens.
Develops in week 4

Question 6

What forms the definitive kidney

Answer 6

Metanephros

Question 7

When does the metanephros start to function?

Answer 7

12 weeks

Question 8

When does the metanephros start to function?

Answer 8

12 weeks

Question 9

What week does the metanephros develop?

Answer 9

5

Question 10

Where does the metanephros develop?

Answer 10

Pelvic region

Question 11

What does the collecting system develop from?

Answer 11

Ureteric bud (grows out from mesonephric duct, covered by a ‘cap’ of metanephric tissue. Bud grows into cap, renal pelvis)

Question 12

The bud splits into 2 parts to form what?

Answer 12

The major calyces.

These continue to subdivide to form the tubules (ureter, renal pelvis, major and minor calyces, collecting tubules)

Question 13

What does the excretory system develop from?

Answer 13

Metanephric cap

Question 14

Metanephric tissue forms renal vesicles which become tubular and capillaries develop. This forms the…

Answer 14

glomerulus

Question 15

Cloaca

Answer 15

Common cavity for urogenital system and the gut

Question 16

What does the urorectal septum divide the cloaca into?

Answer 16

urogenital sinus and anal canal

Question 17

The middle / pelvic part or urogenital sinus develops into

Answer 17

part of the urethra (prostastic part in males, paraurethra in females)

Question 18

Phallic part of urogenital sinus develops into

Answer 18

Develops into penile urethra in males or vagina (?) in females

Question 19

Where does the ureter develop from?

Answer 19

Ureteric bud

directly enters the bladder after the distal part of the mesonephric duct merges into the bladder wall.

Question 20

The ureteric bud develops from the…

Answer 20

mesonephric bud

Question 21

Early splitting of the ureteric bud results in

Answer 21

Double ureter

Question 22

What is an ectopic ureter?

Answer 22

The ureter doesn’t drain into the bladder

Question 23

Horseshoe kidney develops when the kidneys fuse at their

Answer 23

inferior poles

Question 24

The fetal kidney ascends from the ___ to the ___

Answer 24

Pelvis to the abdomen