Gastrulation

Question 1

Weeks 3-8

Answer 1

Trilaminar disc forms

Question 2

Key events in embryonic period

Answer 2

Organogenesis

Teratogenic period

Question 3

Organogenesis

Answer 3

Three germ layers give rise to organ systems

Question 4

Tetratogenic period

Answer 4

Period of highest risk of birth defects

Question 5

Germ layers

Answer 5

Ecto
Meso
Endo

Question 6

Primitive streak

Answer 6

Space through which the epiblast cells can migrate

Question 7

The remaining epiblast becomes

Answer 7

Ectoderm

Question 8

What does not become part of trilaminar disc

Answer 8

Hypoblast

Question 9

Ectoderm

Answer 9

CNS PNS
Sensory epithelium of ears nose and eyes
Epidermis including hair and nails
Subcutaneous glands
Mammary glands
Pituitary glands
Enamel of teeth

Question 10

Endoderm

Answer 10

Digestive system
Liver
Pancreas
Lungs

Question 11

Mesoderm

Answer 11

Circulatory
Lungs
Skeletal system
Muscular system

Question 12

Nerulation definition

Answer 12

Recess of forming neural tube

Question 13

Norochord forms from what

Answer 13

Mesoderm

Question 14

What does notochord signal to ectoderm

Answer 14

Initiation of nerulation

Question 15

Ectoderm thickens to form

Answer 15

Neural playe