Which of the following is a normal age-related change for the female reproductive system?

Correct Answer: D

Rationale: The correct answer is D: Vaginal walls become drier and thinner. This is a normal age-related change in the female reproductive system due to decreasing levels of estrogen during menopause. Estrogen helps maintain the thickness and moisture of vaginal walls. As estrogen levels decline with age, the vaginal walls can become drier and thinner, leading to symptoms like vaginal dryness and increased risk of infection. A, B, and C are incorrect: A: Lung capability increasing is not a normal age-related change for the female reproductive system. It is more related to factors like physical fitness and environmental exposures. B: Decreased response to vaccines is not a direct age-related change in the female reproductive system. It is influenced by factors like immune function and overall health. C: The amount of calcium in the body increasing is not a normal age-related change for the female reproductive system. It is more related to bone health and hormonal regulation.

Correct Answer: B

Rationale: The correct answer is B: Lending support to body structures. Bones provide structural support for the body, helping maintain posture and protect internal organs. They also serve as attachment points for muscles, allowing movement. Choices A, C, and D are incorrect. Bones do not protect the body from disease (A), send messages throughout the body (C), or pump blood (D). Bones are not involved in immune responses, nervous system communication, or cardiovascular functions.

Correct Answer: B

Rationale: The correct answer is B: Paraplegia. Paraplegia specifically refers to the loss of function of the lower body and legs. "Para" means alongside, indicating paralysis affecting both legs. Concussion (A) is a head injury affecting cognitive function, not related to lower body paralysis. Quadriplegia (C) involves paralysis of all four limbs, not just the lower body. Hemiplegia (D) is paralysis affecting one side of the body, not limited to the lower body. Thus, paraplegia is the most appropriate term for the loss of function in the lower body and legs.

Correct Answer: A

Rationale: Rationale for choice A being correct: As women age, hormone levels decrease, leading to menopause. This is a normal age-related change due to the decline in estrogen and progesterone production by the ovaries. Menopause typically occurs around the age of 45-55. Summary of why other choices are incorrect: B: Testosterone levels in males actually decrease with age, leading to symptoms like decreased muscle mass and libido. C: Insulin production may decrease or remain stable with age, but it does not typically increase as a normal age-related change. D: While the body's ability to handle stress may change with age, it does not necessarily improve as a normal age-related change.

Correct Answer: D

Rationale: The correct answer is D: 4. A quad cane has four feet for stability and support. Having four feet provides better balance and weight distribution compared to fewer feet. Option A (1) is incorrect because a quad cane has multiple feet, not just one. Option B (2) is incorrect as it does not provide enough support for balance. Option C (3) is also incorrect as it falls short of the required stability that four feet offer. Therefore, the correct choice is D as it aligns with the design and purpose of a quad cane.