Which of the following is the main site of fertilization in females?

Correct Answer: D

Rationale: The correct answer is D: Fallopian tube. The rationale is as follows: Sperm meets the egg in the fallopian tube during fertilization. The fallopian tube provides the ideal environment for fertilization to occur due to its structure and cilia movement that help transport the egg and sperm. The other options are incorrect because: A: Ovary is where the egg is produced but not where fertilization occurs. B: Cervix is the lower part of the uterus and allows passage of sperm into the uterus but not the site of fertilization. C: Uterus is where the fertilized egg implants and develops into a fetus, but not where fertilization occurs.

Correct Answer: C

Rationale: The correct answer is C: Seminal vesicles. Seminal vesicles produce the fluid that nourishes and protects sperm. They contribute a significant portion of the volume of semen. The other choices are incorrect because: A: Epididymis stores and transports sperm, but does not produce nourishing fluid. B: Prostate gland secretes a thin, milky fluid that helps sperm mobility, but not the main nourishing fluid. D: Vas deferens transports sperm from the testes to the urethra, but does not produce nourishing fluid.

Correct Answer: A

Rationale: The correct answer is A: Testosterone. Testosterone is the primary male sex hormone responsible for the development of male secondary sexual characteristics such as facial hair, deep voice, and muscle growth. It is produced by the testes and plays a crucial role in male reproductive system function. Estrogen (B) is the primary female sex hormone, Progesterone (C) is involved in the menstrual cycle and pregnancy, and FSH (D) is a hormone that stimulates the production of sperm in males and eggs in females.

Correct Answer: A

Rationale: The correct answer is A: Prolactin. Prolactin is the hormone responsible for the secretion of milk in females. It is produced by the anterior pituitary gland and stimulates the mammary glands to produce milk. Oxytocin is also involved in milk ejection but not milk production. Estrogen and progesterone are reproductive hormones and do not directly stimulate milk production.

Correct Answer: C

Rationale: The correct answer is C: Maintain the uterine lining for implantation. Progesterone plays a crucial role in preparing and maintaining the uterine lining to support the implantation and growth of the fertilized egg. This hormone helps create a suitable environment for the developing embryo by thickening the uterine lining and preventing its shedding. Explanation for other choices: A: Stimulate uterine contractions - This is incorrect as progesterone actually inhibits uterine contractions during pregnancy to prevent premature labor. B: Support the development of the fetus - While progesterone indirectly supports fetal development by maintaining the uterine environment, its primary function is not directly related to fetal development. D: Promote breast development - Progesterone does play a role in breast development during pregnancy, but its primary function is not focused on this aspect.