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The function of the immunological barrier in the epididymis is to protect the sperm from attack by the immune system. Primarily, this function is carried out by the BEB, which sequesters sperm antigens and restricts entry of immunoglobulins and immune cells (Fig. 2 B).
1 Draw a sperm cell and label its major parts. 2  Explain the importance of each portion of the duct system and accessory glands of the male reproductive tract. 3  Explain the structural and functional significance of the blood-testis barrier.  Describe the structure and function of the prostate gland.