What is the primary function of the uterine tubes (fallopian tubes) in females?

Correct Answer: D

Rationale: The primary function of the uterine tubes (fallopian tubes) is to transport eggs from the ovary to the uterus for potential fertilization. This process involves capturing an egg released from the ovary, providing a site for fertilization by sperm, and conducting the fertilized egg (zygote) to the uterus for implantation. Choice A is incorrect because sperm are not transported through the fallopian tubes. Choice B is incorrect as the fallopian tubes do not store eggs but rather facilitate their movement. Choice C is incorrect as fertilization occurs in the fallopian tubes but they do not actively support the process.

Correct Answer: B

Rationale: The correct answer is B: Control the development of male secondary sexual characteristics. Testosterone plays a crucial role in the development of traits like facial hair, deep voice, muscle growth, and bone density in males. It is responsible for the physical characteristics that distinguish males from females. Choices A, C, and D are incorrect as testosterone primarily influences male sexual characteristics and does not directly impact sperm production, menstrual cycle regulation, or seminal fluid secretion.

Correct Answer: B

Rationale: Progesterone's role in the female reproductive system is to prepare the uterus for implantation by thickening the uterine lining. This is essential for successful implantation of a fertilized egg. Progesterone does not stimulate ovulation (which is mainly regulated by luteinizing hormone), prevent pregnancy (contraceptives containing progesterone are used for this purpose), or promote the development of secondary sexual characteristics (which is primarily the role of estrogen).

Correct Answer: B

Rationale: The acrosome in sperm contains enzymes that help the sperm penetrate the outer layer of the egg during fertilization. This process is crucial for successful fertilization. The other choices are incorrect because: A) Energy for sperm comes from mitochondria, not the acrosome. C) Sperm are stored in the epididymis, not the acrosome. D) Genetic material is stored in the nucleus of the sperm cell, not the acrosome. Therefore, the correct answer is B as the acrosome's function is directly related to the penetration of the egg during fertilization.

Correct Answer: A

Rationale: The correct answer is A: Increased cervical mucus. During ovulation, the body produces more cervical mucus that becomes clear, stretchy, and slippery to facilitate sperm movement. This helps in the fertilization process. Lower body temperature and decreased estrogen levels are not typically signs of ovulation. Thickening of the uterine lining occurs during the menstrual cycle in preparation for a potential pregnancy, not specifically during ovulation.