Early development of the mesoderm

Question 1

What does the paraxial mesoderm develop into?

Answer 1

Muscle bone (somites) + dermis

Question 2

What does the intermediate mesoderm develop into?

Answer 2

Gonads and kidneys (urogenital system)

Question 3

What does the lateral plates of the mesoderm develop into?

Answer 3

The cardiovascular system, somatic and splanchnic mesoderm

Question 4

What are somites?

Answer 4

Blocks of paraxial mesodermic tissue which go onto develop into muscle and bone

Question 5

When do the first pair of somites form?

Answer 5

Day 20

Question 6

What do dermomytomes develop into?

Answer 6

Derived from somites; they develop into skeletal muscle and connective tissue

Question 7

What do sclerotomes develop into?

Answer 7

Derived from somites; they develop into bones and connective tissue

Question 8

What do dermatomes develop into?

Answer 8

The dermis of the skin

Question 9

What are the two lateral plates of mesoderm?

Answer 9

Splanchnic and somatic

Question 10

What does the splanchnic mesoderm form?

Answer 10

Visceral serous membrane - in contact with the endoderm

Question 11

What does the somatic mesoderm form?

Answer 11

Parietal serous membrane - in contact with the ectoderm

Question 12

Which germ layer forms the parietal peritoneal layer?

Answer 12

Lateral plate - somatic mesoderm

Question 13

Which germ layer forms the visceral peritoneum?

Answer 13

Lateral plate - splanchnic mesoderm

Question 14

Where does the dermis originate from?

Answer 14

The paraxial mesoderm

Question 15

Where do the muscles and bones originate from?

Answer 15

The paraxial mesoderm

Question 16

Where does the urogenital system originate from?

Answer 16

The intermediate mesoderm