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Which of the following hormones is not a secretion product of human placenta -
A
Prolactin
B
Estrogen
C
Progesterone
D
Human chorionic gonadotropin
Detailed Solution
The placenta acts as a temporary endocrine gland during pregnancy.
It secretes human chorionic gonadotropin (hCG), human placental lactogen (hPL), estrogens, progesterone and (later) relaxin.
Prolactin is secreted by the anterior pituitary gland, not by the placenta. Its level rises during pregnancy and it stimulates milk production after birth.
So prolactin is not a secretion product of the human placenta.
It secretes human chorionic gonadotropin (hCG), human placental lactogen (hPL), estrogens, progesterone and (later) relaxin.
Prolactin is secreted by the anterior pituitary gland, not by the placenta. Its level rises during pregnancy and it stimulates milk production after birth.
So prolactin is not a secretion product of the human placenta.