Which statement is correct?

a. The placenta secretes human chorionic gonadotropin, estrogen, and progesterone.
b. The placenta serves the functions of the circulatory, respiratory, and digestive systems for the fetus.
c. Maternal and fetal blood are mixed together within the placenta.
d. Both a and b
e. None of the above


A

Anatomy & Physiology

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Which pairing shows the least-related items?

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Indicate whether the statement is true or false

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