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#15 on TS3
embryonic gas exchange in the human fetus occurs across the
a) chorion lining
b) chorionic villi
c) alveoli of the lungs
d) placenta
e) umbilical cord lining
ans is d...which makes sense but doesnt the chorion form part of the placenta and is where gas exchange occurs?
embryonic gas exchange in the human fetus occurs across the
a) chorion lining
b) chorionic villi
c) alveoli of the lungs
d) placenta
e) umbilical cord lining
ans is d...which makes sense but doesnt the chorion form part of the placenta and is where gas exchange occurs?
