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1. 
What germinal layer gives rise to the respiratory tract
A.
ectoderm
B.
endoderm
C.
mesoderm
2. 
What germinal layer gives rise to the nervous tissue
A.
ectoderm
B.
endoderm
C.
mesoderm
3. 
What germinal layer gives rise to skin
A.
ectoderm
B.
endoderm
C.
mesoderm
4. 
What germinal layer gives rise to lungs
A.
ectoderm
B.
endoderm
C.
mesoderm
5. 
What germinal layer gives rise to the adrenal cortex
A.
ectoderm
B.
endoderm
C.
mesoderm
6. 
What germinal layer gives rise to muscles
A.
ectoderm
B.
endoderm
C.
mesoderm
7. 
What germinal layer gives rise to the adrenal medulla
A.
ectoderm
B.
endoderm
C.
mesoderm
8. 
What becomes ligamentum teres?
A.
ductus arteriosus
B.
ductus venousus
C.
umbilical vien
D.
umbilical artery
9. 
What becomes ligamentum arteriosum?
A.
ductus arteriosus
B.
ductus venousus
C.
umbilical viens
D.
umbilical arteries