Which of the following is a normal skin change associated with aging?

A. The ovaries are responsible for producing hormones such as estrogen and progesterone but do not directly produce lubrication during sexual excitement.
B. The cervix produces mucus that changes in consistency throughout the menstrual cycle but does not play a significant role in lubrication during sexual activity.
C. Skene's glands, located near the urethra, secrete fluid that is often compared to prostate fluid in males, but they do not play the primary role in vaginal lubrication during sexual excitement.
D. Bartholin's glands, located near the vaginal opening, secrete mucus that provides lubrication during sexual excitement, helping to reduce friction and enhance comfort during intercourse.

A. While phagocytes move to areas of infection or damage, their primary role is not clumping together and adhering to tissues but rather engulfing and digesting foreign particles.

B. Phagocytes, such as neutrophils and macrophages, are white blood cells that ingest and digest foreign pathogens, dead cells, and debris in damaged tissues. This is their primary function in the immune response.

C. Releasing histamine is the function of mast cells, not phagocytes. Histamine is involved in initiating inflammation, but phagocytes are focused on clearing pathogens and debris.

D. Transporting oxygen is the function of red blood cells, not phagocytes. Phagocytes are involved in immune defense, not in the transport of oxygen.