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SEX

SEX. What comes to mind when you see this word? What does it mean to you? To society? What are the implications?. What are some other names for sex? What have you heard about it? What questions do you have?.

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SEX

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  1. SEX What comes to mind when you see this word? What does it mean to you? To society? What are the implications?

  2. What are some other names for sex? What have you heard about it? What questions do you have?

  3. What is the difference between “sex” and “reproduction”?What do you know about reproduction?

  4. Scrotum:An external sac behind the penis.Thin skin, darkly pigmented, has light hair covering.

  5. Function of Scrotum:* Encloses the testicles and regulates the temperature of the testicles/testes.* Sperm production only happens at a temperature a bit lower than body temperature* Control of temperature by sweating, changing blood supply, contracting/expanding scrotal muscle which moves the testes closer to the body for warmth, or further away to cool

  6. Testicles/Testes2 oval glands, usually left hangs lower than the right.Protected by the scrotum.

  7. Function:* To produce hormones such as testosterone.* To produce sperm.Sperm is continually produced, from puberty to death.

  8. Side Note:Testosterone is a key hormone in helping the production of male sex organs, and secondary sexual characteristics such as muscle mass, the Adam’s apple, facial and pubic hair, etc.

  9. Epididymis:* Canal on the testicle where sperm mature. It is a path for sperm to leave testicle. Leads to Vas Deferens.

  10. Vas Deferens:* Carries sperm to urethra* Along the way the sperm is mixed with fluid – provides nutrition for sperm and helps move sperm. * Fluid is provided by the seminal vesicles (see previous diagram) and the prostate gland.

  11. Sperm:

  12. Sperm carry half the genetic information from the father. This is in the “head.” They are motile, i.e. they move. This happens via motion of the “tail.”

  13. ProstateThe function of the prostate is to secrete a slightly alkaline fluid, milky or white in appearance, that usually constitutes 50–75% of the volume of the semen along with spermatozoa (sperm) and seminal vesicle fluidQuestion to ask yourself: Why is it important that the fluid containing sperm be alkaline, a.k.a. basic?

  14. Cowpers Glands:* secrete a fluid that lubricates the urethra* Also known as “bulbourethral gland”* Could contain sperm which could fertilize an egg before orgasm or ejaculation

  15. Urethra:* Thin tube* A pathway for urine and semen

  16. Penis:* Primary male sex organ* Passageway for urine and seminal fluid

  17. Foreskin:* skin that covers the tip of the penis* circumcision is when this skin is removed* Issues with circumcision?

  18. Erection:* When the tissue of the penis fills with blood* Can occur from birth onwards

  19. Female Genitalia, External:

  20. Labia:* Folds of skin which protect the external organs and vaginal opening

  21. Clitoris:* An area of sexual pleasure, sometimes referred to as the “female equivalent to the penis,” but does not have a urethral opening

  22. Urethral Opening/Urethra:* where urine exits the body; separate from the vagina and the female sex organs

  23. Hymen:* a membrane that covers lower portion of vaginal entrance* often associated with virginity, although the hymen does not necessarily remain intact in all virgins

  24. Breasts:* otherwise known as mammary glands* what makes us classified as “mammals”  we nurse our young with breast milk

  25. Internal Female Genitalia:

  26. Ovaries:* 2* produce female sex hormones (estrogen, progesterone) which result in secondary sexual characteristics during development* produces eggs, which contain half of the female’s genetic information* 40 000 to 400 000 immature eggs at birth, no more will be created* eggs mature at puberty, degenerate during menopause

  27. Fallopian Tubes:* Passageway for eggs to move to uterus* Fertilization occurs here, then will move to the uterus to develop* Directed Question: what is fertilization?

  28. Uterus:* About the size of a fist, normally* Very stretchy* Holds the developing baby

  29. Cervix:* End of the uterus* Allows sperm to enter* Opens during childbirth – dilates – to about 10 cm

  30. Vagina* 3-4 inch space (canal)* Childbirth canal* Intercourse* Menstrual flow leaves body via the vagina

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