Embryonic Development

Question 1

Ectoderm

Answer 1

Attract-o-derm”
What attracts you? Think about appearance and thinking:

Skin (appearance)

Nervous system (brain, nerves)

Eyes, ears, enamel
✅ “What makes you attractive? Your brain, skin, and smile!”

Question 2

Mesoderm

Answer 2

“Move-o-derm”
What moves or supports you?

Muscles

Bones

Heart & blood (circulatory)

Kidneys

Gonads
✅ “Mesoderm = Movement + Middle Stuff (Muscles, Heart, Kidneys)”

Question 3

Endoderm

Answer 3

“Inside-o-derm”
What’s inside?

Lining of gut, lungs

Liver, pancreas

Bladder, thyroid

Question 4

What are the two parts of the trophoblast?

Answer 4

Cellular trophoblast and Syncytial trophoblast