Why is the blood-testis barrier important?
A) because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system
B) because some blood contents are toxic to the spermatozoa
C) because immature sperm cells lose their motility when they encounter any blood component
D) because the barrier traps sex hormones, keeping them at a higher level than the blood

Question

Quizplus · Accepted Answer

The blood-testis barrier is important because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system. The barrier prevents immune cells from attacking and damaging the developing sperm.

Answer: B
 The blood-testis barrier is important because some blood contents are toxic to the spermatozoa. The barrier protects the developing sperm from harmful substances that may be present in the bloodstream.

Answer: D
 The blood-testis barrier is important because it traps sex hormones, keeping them at a higher level than the blood. This is necessary for proper development and function of the testes and male reproductive system.

Why Is the Blood-Testis Barrier Important