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Sertoli cells, which nurture and support developing spermatocytes, secrete a fluid into seminiferous tubules that helps transport sperm to the genital ducts.The ductuli efferentes possess cuboidal cells with microvilli and lysosomal granules that modify the ductal fluid by reabsorbing some fluid.the main energy source of sperm cells, which rely entirely on sugars from the seminal plasma for energy), phosphorylcholine, prostaglandins (involved in suppressing an immune response by the female against the foreign semen), proteins, vitamin C Zinc serves to help to stabilize the DNA-containing chromatin in the sperm cells.

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These alkaline bases counteract and buffer the acidic environment of the vaginal canal, and protect DNA inside the sperm from acidic denaturation. If you are under the age of 18 years, or under the age of majority in the location from where you are accessing this website you do not have authorization or permission to enter this website or access any of its materials.If you are over the age of 18 years or over the age of majority in the location from where you are accessing this website by entering the website you hereby agree to comply with all the Terms and Conditions .Depending on the species, spermatozoa can fertilize ova externally or internally.In external fertilization, the spermatozoa fertilize the ova directly, outside of the female's sexual organs.

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