<P> Semen, also known as seminal fluid, is an organic fluid that may contain spermatozoa . It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize female ova . In humans, seminal fluid contains several components besides spermatozoa: proteolytic and other enzymes as well as fructose are elements of seminal fluid which promote the survival of spermatozoa, and provide a medium through which they can move or "swim". Semen is produced and originates from the seminal vesicle, which is located in the pelvis . The process that results in the discharge of semen is called ejaculation . Semen is also a form of genetic material . In animals, semen has been collected for cryoconservation . Cryoconservation of animal genetic resources is a practice that calls for the collection of genetic material in efforts for conservation of a particular breed . </P> <P> 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 . Female fish, for example, spawn ova into their aquatic environment, where they are fertilized by the semen of the male fish . </P>

Describe the components of ejaculatory fluid and their sources
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