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# Male Reproductive Structures Sexual reproduction involves the formation of a diploid zygote from two haploid gametes. The male's role is to produce sperm cells and deliver them to the female reproductive system for fertilization. The male reproductive system contains two egg-shaped testes. Each...

# Male Reproductive Structures Sexual reproduction involves the formation of a diploid zygote from two haploid gametes. The male's role is to produce sperm cells and deliver them to the female reproductive system for fertilization. The male reproductive system contains two egg-shaped testes. Each testis is approximately 4 cm long and 2.5 cm in diameter. Each testis contains about 250 compartments with tightly coiled tubules called seminiferous tubules. If all the seminiferous tubules were stretched out, they would be about 500 meters long. Sperm production (meiosis) occurs in the specialized lining of these tubules within the testes. The testes develop in the abdominal cavity, but prior to birth, they descend into the external sac called the scrotum. The temperature in the scrotum is approximately 2°C to 3°C cooler than the internal body temperature (37°C). This lower temperature is essential for the proper development of sperm.