Question

During pregnancy, the production of ova in ovary is prevented by

• A. Relaxin
• B. Prolactin
• C. Progesterone
• D. Estrogen

Answer 1

Answer: (C)

• During pregnancy, the production of ova in ovary is prevented by progesterone.

• Progesterone is a natural female hormone. Called “the pregnancy hormone,” it is essential before and during pregnancy.

• During pregnancy:

Progesterone helps nurture the fetus.

A supply of progesterone to the endometrium continues to be important during pregnancy. Following a successful implantation, progesterone helps maintain a supportive environment for the developing fetus. After 8 to 10 weeks of pregnancy, the placenta takes over progesterone production from the ovaries and substantially increases progesterone production.

• Before pregnancy:

Progesterone prepares the uterus for pregnancy.

After ovulation occurs, the ovaries start to produce progesterone needed by the uterus. Progesterone causes the uterine lining or endometrium to thicken. This helps prepare a supportive environment in your uterus for a fertilized egg.

• If a fertilized egg does implant in the uterine wall, progesterone helps to maintain the uterine lining throughout pregnancy. Progesterone is necessary for breast development and breast-feeding as well. It complements some of the effects of estrogen, another female hormone.