200019.vtt
1.82 KB
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WEBVTT
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Sperm are produced and released by the male reproductive organs.
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The testes are where sperm are produced.
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The testes are linked to the rest of the male reproductive organs by the vas deferens,
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which extends over the base of the pelvic bone or ilium, and wraps around to the ampulla,
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seminal vesicle, and prostate.
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The urethra then runs from the bladder through the penis.
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Sperm production in the testes takes place in coiled structures called seminiferous tubules.
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Along the top of each testicle is the epididymis.
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This is a cordlike structure where the sperm mature and are stored.
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The release process starts when the penis fills with blood and becomes erect.
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Continuing to stimulate the penis will cause an ejaculation.
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Mature sperm begin their journey by travelling from the epididymis to the vas deferens,
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which propels sperm forward with smooth muscle contractions.
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The sperm arrive first at the ampulla just above the prostate gland.
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Here, secretions from the seminal vesicle located next to the ampulla are added.
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Next, the seminal fluid is propelled forward through the ejaculatory
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ducts toward the urethra.
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As it passes the prostate gland, a milky fluid is added to make semen.
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Finally, the semen is ejaculated from the penis through the urethra.