The placenta not only serves as an organ of exchange but also secretes all of the following hormones, except
a. prolactin.
b. chorionic gonadotropin
c. placental lactogen
d. progesterone
e. estrogen

Prolactin

Explanation:

The placenta is an endocrine gland that is present in the women's body during the time of pregnancy.

When a women is pregnant there is a connecting link in between the child and mother that transfers nutrients to the fetus and carries waste materials from the body of the fetus to mother's body.

Placenta also releases some hormones which includes Chorionic gonadotropin, estrogen, placental lactogen, progestrone.

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