2 Similarities / Differences Create Male/Female/Both brainstorm…Develop very similar structures of sex glandsTwo genital tubesManufacture the hormones of the other sex.Only the female has organs for pregnancy and childbirth.
3 Female Organsuterus (made up of muscular walls, a lining called the endometrium, and a cervix. The uterus is also called “womb”)houses and protects embryo/fetus/babyallows nutrient & waste exchange with placentanourishes an embryo, before a placenta growscervixthe bottom section of the uterusproduces fluids to help sperm travelproduces a mucous plug to keep germs out during pregnancy
4 vagina allows passage of sperm produces fluids to cleanse and lubricate itself and to help sperm travelallows passage of shed endometrium during menstruationallows passage of babyprovides sensation (has many nerve endings especially in the outer third)a collapsed tube, like a deflated balloon3” long when not aroused, 5-6” when aroused, but very stretchyis the middle of female’s three openings
5 ova (singular = ovum …also called egg cell) ovaries (singular = ovary) hymenmembrane partly covering vaginal openingsome girls are born without a hymenmay be stretched during sexual intercourse or by using a tampon or with fingersova (singular = ovum …also called egg cell)carry strings of genes called chromosomes which mix with chromosomes of sperm to direct fetal development if fertilized and implanted in the uterusthey dissolve in the Fallopian tube after about 24 hours if not fertilizedovaries (singular = ovary)provide storage for ovaallow maturation of ovaproduce sex hormones (estrogen, progesterone, androgens)Fallopian tubesallow passage of ova toward uterusallow passage of sperm from uterus
6 fimbria (plural = fimbriae) guides a mature ovum, when it is released from an ovary, into a Fallopian tubefringe-like or finger-like outer ends of the Fallopian tubeSkene’s glandsarea of firm tissue anterior (towards the front) to the wall of the vagina, surrounding the urethraresponds to pressure sometimes causing orgasm and sometimes produces fluid (it is not urine)also known as Graffenberg-spot (G-spot) or the female prostate glandvulva (made up of labia majora, labia minora, and clitoris)protect openings of urethra and vagina, as eyelids protect eyesprovide sensation (has many nerve endings)labia are folds of skinouter labia (labia majora) have pubic hair
7 clitoris (made up of shaft, crura [internal branches], glans and hood) provides sensation (has many nerve endings)each internal branch of erectile tissue is about 3½” longthe glans (the visible part of the clitoris) is usually ¼-½” long , comparable in size to a pearl at front of vulva, where the labia meetclitoral hoodprotects the glans of the clitorisprovides sensation (has many nerve endings)like a cap, mostly covers the clitoris, when it isn’t erect
8 See High School FLASH lesson 2, page 3-6 for teacher notes. The curriculum is online:
11 Fertilization (conception): a sperm entering an ovum.
12 Male Organs penis (made up of shaft, glans, and sometimes foreskin) allows passage of urine and of semenprovides sensation (has many nerve endings)the average penis measures 3-4” when it's not erect (flaccid) and 5-7” when erectforeskinprotects the glans of the penisprovides sensationmales who’ve been circumciseddon’t have onescrotummuscular sac which is shorterwhen cold, longer when warmholds testescontrols temperature
13 vas deferens (plural = vasa deferentia … also called sperm ducts) testes (also called testicles) singular = testisproduce sperm and sex hormones (androgens, testosterone)each is made of 500-1,200 feet of tightly coiled tubesepididymis (plural = epididymes)allows maturation of spermspermatazoan (plural = spermatozoa)cell from a man (commonly called “sperm”)they carry strings of genes (called “chromosomes”) or DNA instructions in case the sperm cell meets with an egg cell and fertilizes it.spermatic cordssuspend the testissupply blood to the testisprovide sensationcarry sperm from the testisvas deferens (plural = vasa deferentia … also called sperm ducts)provides storage for spermallow passage of spermas big around as sewing threadthey lead into the abdomen, where (behind the bladder) they widen into storage sac
14 Cowper’s glands (also called bulbourethral glands) seminal vesiclescontribute fructose (sugar) to semen for nourishing the spermsemenhelps sperm live longer and travel betterabout a teaspoon full per ejaculationprostate glandproduces most of the fluid that makes up semenCowper’s glands (also called bulbourethral glands)pair of glandsproduce fluid called pre-ejaculate or “pre-cum” that cleanses the urethra of acid (from urine) to protect the sperm
18 Timelines Female Time Line: Male Time Line: Ages 9-12 Infancy Secondary sex characteristics appearAges 11-14Menstrual cycle beginsLate 20-30’sPeak sexual urgesAges 45-55menopause (cycle stops, but sex urge continues)Male Time Line:InfancyErections beginAges 11-14Secondary sex characteristics appearAges 13-16Sperm produced in adult amounts (puberty)Late teensPeak sexual urges for boysThroughout lifeIf good health is present, there is the sex urge and ability to father children.
19 Both Male and Femalebladdernavel• provides storage for urine• allows passage of oxygen and nourishment before birthurethra• after birth, it serves no purpose• allows passage of urine• in males allows passage of semen it’s the tube inside the penisabdomen(also called the belly)• in females, it is below the clitoris but above the opening of the vaginabuttocks• provides cushion for tail bone and aids in walking and standing• not part of the reproductive system• contains muscles for movementanus• allows passage of bowel movement (feces)pelvis(the “pelvic region”• provides sensation (has many nerve endings)the lower abdomen)• bowl shaped bone structure that supports and protects the internal reproductive organs• the opening from the rectum and lower intestinescilia(singular=cilium)• hair-like structures which line the Fallopian tubes and the epididymis, (sweep an ovum down the fallopian tubes)