Final answer:
The blood-testes barrier functions to shield developing sperm from pathogens and to avoid autoimmune attacks by the immune system against the developing sperm. It is essential for the proper development and maturation of sperm within the testes.
Step-by-step explanation:
The two functions of the blood-testes barrier are to protect developing sperm from potential bloodborne pathogens, and to prevent the body's immune system from recognizing and attacking the developing sperm as foreign invaders, which could lead to an autoimmune reaction.
This barrier is formed by tight junctions between Sertoli cells that line the seminiferous tubules in the testes. By tightly regulating the internal environment of the testes, it ensures the safe development of sperm through various stages of spermatogenesis. It's imperative for maintaining the appropriate conditions necessary for sperm development and maturation.
The blood-testes barrier protects sperm from pathogens and prevents autoimmune responses against developing sperm.