QuestionSBA
QuestionChoice
Prolactin does cause enlargement of the mammary glands during pregnancy, preparing them for milk production. It is produced and secreted by the anterior pituitary gland, not the placenta.
10004630
e
Prolactin produced by the placenta causes enlargement of the mammary glands during pregnancy
QuestionChoice
Progesterone is mostly produced by the corpus luteum until around week 10 of pregnancy. After this, progesterone is mostly produced by the placenta.
10004627
b
The corpus luteum is the source of progesterone throughout pregnancy
QuestionChoice
Oxytocin is produced at the start of labour, stimulating uterine muscle contractions. It is produced and secreted by the hypothalamus.
10004626
a
Oxytocin, produced by the hypothalamus, stimulates the contraction of the myometrium at the beginning of labour
QuestionChoice
Human chorionic gonadotrophin is produced by the placenta, and maintains the corpus luteum in early pregnancy. Its levels significantly decrease at weeks 15-16 of pregnancy.
10004629
d
Human chorionic gonadotrophin levels significantly decrease after week 30 of pregnancy
QuestionChoice
The increase in oxytocin, not oestrogen, at the beginning of labour, triggers prostaglandin production, which helps to increase uterine contractions.
10004628
c
The increase in oestrogen at the beginning of labour triggers prostaglandin production, which helps to increase uterine contractions
Concept
Chapter
2693
4251
Pregnancy hormones
Topic
175
Reproductive Physiology
13472
Which of the following statements regarding hormones in pregnancy is correct?
a