Final answer:
The seminiferous tubules in the male reproductive system produce new sperm cells.
Step-by-step explanation:
The part of the male reproductive system that produces new sperm cells is the seminiferous tubules. These tubules are located within the testes. They are responsible for the process of spermatogenesis, which involves the production and maturation of sperm cells.
The seminiferous tubules contain specialized cells called Sertoli cells, which provide nourishment and support to developing sperm cells. These cells also help in the proper transport of sperm cells.
Once sperm cells are produced in the seminiferous tubules, they then undergo further maturation and storage in the epididymis, another part of the male reproductive system.
Learn more about Semen production