Urinary system embryology

Question 1

What germ layer gives rise to the urinary system?

Answer 1

Intermediate mesoderm

Question 2

What region of the intermediate mesoderm gives rise to the urinary system?

Answer 2

Urogenital ridge

Question 3

What are the 3 systems that form the kidney?

Answer 3

Prosenephros, mesenephros, metanephros

Question 4

In which week does the prosenephros form?

Answer 4

4th week

Question 5

What does the prosenephros form?

Answer 5

Nothing- regresses completely by the end of week 4

Question 6

What is the role of the mesonephros?

Answer 6

Primary excretory system in the embryo up to 2 months

Question 7

What forms the definate kidney?

Answer 7

Metanephros

Question 8

At what week does the metanephros become functional?

Answer 8

12th week

Question 9

What are the three parts of the urogenital sinus?

Answer 9

The upper part
The pelvic part
The phallic/caudal part

Question 10

What does the upper part of the urogenital sinus form?

Answer 10

The bladder

Question 11

What does the pelvic part of the urogenital sinus form?

Answer 11

The urethra, some of the female reproductive tract, and the prostatic and membranous urethra in males

Question 12

What does the phallic/caudal part of the urogenital sinus form?

Answer 12

Part of the female reproductive tract and the spongy urethra in males

Question 13

Where does the prosenephros develop?

Answer 13

The cervical region

Question 14

Where does the mesenephros develop?

Answer 14

The thoracic and lumbar region

Question 15

Where does the metenephros develop?

Answer 15

The pelvic region

Question 16

What forces the kidneys to move up the abdominal wall?

Answer 16

Growth of abdomen below the kidneys