Germ Layer Fates

Question 1

What does the hair nails and epidermis come from?

Answer 1

Ectoderm

Question 2

What do glands come from?

Answer 2

Ectoderm

Question 3

What does the lens of the eye come from?

Answer 3

Ectoderm

Question 4

What makes up the connective tissue including dermis and hypodermis?

Answer 4

Mesoderm

Question 5

What makes up the bone and cartilage?

Answer 5

Mesoderm

Question 6

What makes up the smooth and skeletal muscle?

Answer 6

Paraxial Mesoderm

Question 7

Where does the endothelium of blood vessels come from?

Answer 7

Mesoderm

Question 8

Where do RBC’s, WBC’s kupffer cells come from?

Answer 8

Mesoderm

Question 9

Where does the kidney and spleen come from?

Answer 9

Mesoderm

Question 10

Where do the testes, epididymis, ductus, deferens (JUNK) come from?

Answer 10

Intermediate Mesoderm

Question 11

Where does the heart come from?

Answer 11

Lateral Mesoderm

Question 12

Where does the lining of the GI tract come from?

Answer 12

Endoderm

Question 13

Where do the acinar cells of the pancreas come from?

Answer 13

Endoderm

Question 14

Where does the thyroid and thymus come from?

Answer 14

Endoderm

Question 15

Where does the bladder come from?

Answer 15

Endoderm (transitional epithelium)

Question 16

Where does the CNS (brain and spinal cord) come from?

Answer 16

Neuroectoderm

Question 17

Where do all of the CNS supporting cells come from?

Answer 17

Neuroectoderm

Question 18

Where does the retina, optic nerve and iris come from?

Answer 18

Neuroectoderm

Question 19

Where do the PNS ganglia come from?

Answer 19

Neural Crest Cells

Question 20

Where do Schwann Cells come from?

Answer 20

Neural Crest Cells

Question 21

Where do Melanocytes come from?

Answer 21

Neural Crest Cells

Question 22

Where do the bones of the cranium come from?

Answer 22

Neural Crest Cells (these are bones with no cartilagenous precursors)