Sperm
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Sperm is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction. Sperm cells contribute approximately half of the nuclear genetic information to the diploid offspring. Anim
Motile sperm cell attempting to penetrate an ovum's coating to fertilize it.
Electron micrograph of human spermatozoa magnified 3140 times.
Human sperm stained for semen quality testing
Semen
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Semen, also known as seminal fluid, is a bodily fluid that contains spermatozoa from the male gonads of animals. In humans and placental mammals, seminal fluid is ejaculated through the penis via the
Sperm
…of the female egg to form a diploid cell with 46 paired chromosomes. In mammals, sperm is stored in the epididymis and released through the penis in semen during ejaculation. The word sperm is derived from the Greek word σπέρμα, sperma, meaning "seed…
Spermatozoa, in this case human, are a primary component of normal semen, and the agents of fertilization of female ova.
Human semen in a Petri dish
Semen stain on carpet observed with and without ultraviolet light