The two structures that are NOT part of the male reproductive system tract and help with sperm nutrition are:
1. Seminal vesicle: The seminal vesicles are responsible for producing a significant portion of the fluid that ultimately becomes semen. This fluid provides nutrients and energy for sperm to survive and swim effectively.
2. Prostate: The prostate gland secretes a fluid that is important for nourishing and protecting sperm. This fluid is alkaline in nature, helping to neutralize the acidic environment of the female reproductive system, which can be harmful to sperm.
Therefore, the structures that are NOT part of the male reproductive system tract and do not directly contribute to sperm nutrition are the vas deferens and the epididymis. These structures are mainly involved in transporting and storing sperm rather than providing nutritional support for sperm cells.
