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Pre-Ejaculation

Pre-Ejaculation. What’s the purpose of pre-ejaculatory fluid? If contraceptives are not used, can a woman become pregnant from pre-ejaculatory fluid? If a man has a vasectomy, can they still ejaculate? If so, what makes up the ejaculate?. Male Reproduction System.

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Pre-Ejaculation

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  1. Pre-Ejaculation What’s the purpose of pre-ejaculatory fluid? If contraceptives are not used, can a woman become pregnant from pre-ejaculatory fluid? If a man has a vasectomy, can they still ejaculate? If so, what makes up the ejaculate?

  2. Male Reproduction System • Function – to produce a sperm cell • Male reproduction cell • Sperm cell unites with a female egg (ovum) to form a fertilized ovum • Production starts at puberty (ages 12-15) • Testosterone causes the testes to produce sperm • Spermatogenesis – produce sperm for the rest of his life

  3. External Male Reproduction Organs • Testes – male sex glands, manufacture the male sex hormone – testosterone and produce male reproduction cell – sperm • Scrotum – sac that hold the testes.

  4. Testes • Seminiferous tubules – sperm is produced in this section of the testes • 500 million each day • Epididymis – stores newly produced sperm • 64 days for sperm to fully mature

  5. Penis • Tubelike organ that functions in sexual reproduction, sexual pleasure and elimination of body wastes. • Erections – blood fills three cylinders which surround the urethra • Ejaculation – release of reproduction fluids • Penis size varies from male to male

  6. Circumcision • Fold of skin that covers the end of the penis (born with) • Surgical removal of the foreskin

  7. Internal Male Reproductive Organs • Vas Deferens – a long tube that connects the epididymis with the urethra • Seminal Vesicles – Two little pouches just above and either side of the prostate gland, they secrete a fluid that mixes with sperm- the fluid travels down the ejaculatory duct to mix with the sperm • Prostate Gland – below the bladder and surrounds the urethra, secretes a milky and alkaline fluid that mixes with sperm (size of a chestnut) • Cowper’s Gland – glands that open into the urethra, secrete a clear and sticky fluid that will cleanse the urethra of acid from urine • Urethra – tubelike organ that travels through the penis and leads to the ejaculatory ducts, passage way for sperm and urine • Semen – mixture of fluids from the seminal vesicles, prostate gland and Cowper’s gland

  8. Concerns about the Male Reproduction System • Nocturnal Emissions • Hernia – pushing of a part of the body through the muscle wall that normally contains it • Inguinal hernia – weak spot in the abdominal wall near the top of the scrotum. Part of the intestine may push through

  9. Concerns • Sterility – weak or malfunctioning sperm • Temperature changes • Certain chemicals • Smoking • Contracting mumps as an adult • Untreated STD’s • Faulty operation of epididymis, vas deferens, or urethra

  10. Concerns • Testicular Cancer • 1% of all cancer • 15-34 years of age

  11. Concerns • Prostate • Cancer • Prostate gets bigger and blocks the urethra or bladder • 2nd most common type of cancer in men

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