Introduction To Embryology

Question 1

When is first mitotic division?

Answer 1

30 hours after fertilisation

Question 2

The cavity of morula is called?

Answer 2

Blastocyst

Question 3

Outer layer called?

Answer 3

Trophoblast

Question 4

Inner cell mass 2 layers?

Answer 4

Epiblast and hypoblast

Question 5

Epiblast forms the?

Answer 5

Embryp

Question 6

Hypoblast forms?

Answer 6

Extraembryonic membranes

Question 7

Trophoblast splits into?

Answer 7

Cytotrophoblast and synthiotrophoblast

Question 8

What creates yol sac?

Answer 8

Excolemic membrane

Question 9

What becomes the ectoderm?

Answer 9

The epiblast

Question 10

Paraxial mesoderm becomes?

Answer 10

Somites, 42-44 pairs

Question 11

Somites differentiation becoming?

Answer 11

Dermomytomes and sclerotomoes

Question 12

Dermomyotomes become?

Answer 12

Connective tissue and skeletal muscle

Question 13

Sclerotomes becomes?

Answer 13

Cartilage bone - vertebral arch

Question 14

Intermediate mesoderm gives rise to?

Answer 14

Kidneys, gonads urogenital ducts and associated glands

Question 15

Lateral plate mesoderm gives rise to?

Answer 15

Parietal (somatic) and visceral (splanchnic) layers

Question 16

Which nerves have been dragged down due to embryology?

Answer 16

Vagus and phrenic