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

A. The primary follicle is an earlier stage in the development of the ovarian follicle, not the structure that forms after ovulation.
B. The zygote is the result of fertilization, formed when the sperm and egg unite, but it does not form from the follicle after ovulation.
C. The corpus luteum forms from the remains of the follicle after ovulation. It secretes progesterone to support early pregnancy or prepares to degenerate if pregnancy does not occur.
D. The oocyte is the egg cell itself, which is released during ovulation, but it is not the structure that forms from the follicle after ovulation.

A. Dense regular connective tissue consists of fibroblasts arranged tightly between parallel arrays of collagen fibers. This structure provides tensile strength in one direction, which is found in tendons and ligaments.

B. Dense irregular connective tissue also contains collagen fibers, but these fibers are arranged in an irregular, non-parallel pattern, allowing the tissue to withstand tension from multiple directions, such as in the dermis of the skin.

C. Elastic connective tissue contains a higher proportion of elastin fibers, which provide stretch and recoil. It is found in structures like the walls of large arteries, but not in parallel arrays of collagen fibers.

D. Reticular connective tissue consists of a network of thin, branching collagen fibers, providing structural support in organs like the spleen and lymph nodes, but it does not have tightly packed fibroblasts between parallel collagen fibers.