From superficial to deep, what is the correct order of structures that would be encountered if a needle was inserted into a testis?

A. Liver: The liver plays a role in detoxification and metabolism but is not involved in lymphocyte production.

B. Stomach: The stomach is part of the digestive system, not the immune system.

C. Small Intestine: The small intestine is involved in nutrient absorption and contains some lymphoid tissue (Peyer's patches) but is not the main site of lymphocyte production.

D. Thymus: The thymus is the organ where T-lymphocytes mature and are essential for the immune response.

A. Fully mature and leave the epididymis: The acrosome does not play a role in sperm maturation or their release from the epididymis.

B. Travel through the male reproductive ducts: Movement through the reproductive ducts relies on the sperm's flagellum and muscle contractions, not the acrosome.

C. Develop a full set of chromosomes: Chromosome development occurs during spermatogenesis and is unrelated to the acrosome.

D. Breach and fertilize the ovum: The acrosome contains enzymes that allow the sperm to penetrate the ovum during fertilization. Without an acrosome, the sperm would be unable to breach the egg’s outer layer.