Development of the Urinary System- Embryology

Question 1

During week __ the urogenital system develops

Answer 1

4

Question 2

The urogenital system can be functionally divided into the _____ system and the _____ system

Answer 2

• urinary

- genital

Question 3

Both the urinary and genital systems develop from ______ mesoderm

Answer 3

intermediate- develop from common mesodermal ridge

Question 4

What are the three types of different mesoderm created by lateral folding?

Answer 4

• paraxial mesoderm
• intermediate mesoderm
• lateral plate mesoderm
• -somatic
• -splanchnic

Question 5

Intermediate mesoderm becomes ______ when it shifts posteriorly and is pushed behind the peritoneal

Answer 5

retroperitoneal

Question 6

Intermediate mesoderm develops the _______ ridge

Answer 6

urogenital

Question 7

What are the 2 main components of the urogenital ridge?

Answer 7

• nephrogenic cord

- genital ridge

Question 8

What is the lateral part of the urogenital ridge that is responsible for urinary structures?

Answer 8

nephrogenic cord

Question 9

What is the medial portion of the urogenital ridge that is responsible for genital structures?

Answer 9

genital ridge

Question 10

Formation of the ____ slightly overlapping kidney systems develop in a _____ to _____ sequence

Answer 10

• three
• cranial
• caudal

Question 11

What are the three stages of kidney development?

Answer 11

1 pronephros
2 mesonephros
3 metanephros

Question 12

The ______ stage of kidney development the kidney is rudimentary and nonfunctional

Answer 12

pronephros

Question 13

The _____ stage of kidney development the kidney functions for a short time during the early fetal period

Answer 13

mesonephros

Question 14

The _____ stage of kidney development the kidney is functional and forms the permanent kidney

Answer 14

metanephros

Question 15

The ______ appears at day 21 and degenerates by day 24, is never functional in humans

Answer 15

pronephros

Question 16

The pronephros is formed in segmented _______ mesoderm in the ______ region

Answer 16

• intermediate

- cervical (C5-C7 somite level)

Question 17

The pronephric duct goes to the ______

Answer 17

cloaca

Question 18

The ______ appears in early week 4 and forms in the ____& ____ segments of intermediate mesoderm

Answer 18

• mesonephros
• thoracic
• lumbar

Question 19

Urine is produced and drains along the _____ (Wolffian) duct to the (_____/bladder)

Answer 19

• mesonephric (pronephric duct renamed)

- cloaca

Question 20

In week __ the thoracic segments regress but the mesonephric kidney continues functioning until week __

Answer 20

• 5

- 10

Question 21

What are the structures associated with the mesonephros?

Answer 21

• mesonephric duct
• mesonephric tubules
• mesonephric vesicles