What is the main function of the female reproductive system?

Correct Answer: C

Rationale: The correct answer is C because the main function of the female reproductive system is to provide a site for fertilization and support embryo development. This includes the production of eggs, the site for fertilization in the fallopian tubes, and the nurturing of the embryo in the uterus. Choices A and D are partially correct as the female reproductive system also produces hormones and regulates the menstrual cycle, but these are not the main functions. Choice B is incorrect as supporting fetal development occurs after fertilization and embryo development, which are the primary functions of the female reproductive system.

Correct Answer: C

Rationale: The myometrium is the muscular layer of the uterus responsible for contracting during labor to facilitate childbirth. It helps push the baby out. Choice A is incorrect as the myometrium does not support the endometrial lining. Choice B is incorrect as the myometrium does not facilitate implantation. Choice D is incorrect as the myometrium does not secrete estrogen.

Correct Answer: A

Rationale: The correct answer is A: Ovary. Estrogen is primarily produced by the ovaries, specifically by the ovarian follicles. The ovaries contain specialized cells that produce estrogen in response to hormonal signals. Estrogen plays a crucial role in regulating the menstrual cycle, promoting the development of secondary sexual characteristics, and maintaining reproductive health. The other choices (B: Uterus, C: Fallopian tubes, D: Cervix) are incorrect because they do not play a direct role in the production of estrogen. The uterus is the organ where a fertilized egg implants and develops during pregnancy. The fallopian tubes are responsible for transporting eggs from the ovaries to the uterus. The cervix is the lower part of the uterus that connects to the vagina. While these structures are important for reproduction, they do not produce estrogen.

Correct Answer: B

Rationale: Testosterone is the correct answer because it is the primary male sex hormone responsible for the development of male secondary sexual characteristics such as facial hair, deep voice, and muscle growth. Estrogen (A) is the primary female sex hormone, progesterone (C) is involved in menstrual cycle regulation, and FSH (D) is a hormone that stimulates egg production in females.

Correct Answer: B

Rationale: Progesterone during pregnancy maintains the uterine lining by supporting the implantation and growth of the embryo. This hormone helps prevent the shedding of the uterine lining which is crucial for a successful pregnancy. Progesterone does not stimulate uterine contractions (choice A), inhibit ovulation (choice C), or stimulate milk production (choice D) during pregnancy.