Ch 27 Female Vagina.docx - Ch. 27 Female Genitourinary...

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Ch. 27 Female Genitourinary SystemExternal GenitaliaAlso called the vulva, or pudendumMons pubis- round, firm pad of adipose tissue covering the symphysis pubisoAfter puberty it is covered with hair in the shape of an inveted triangleLabia majora- two rounded folds of adipose tissue extending from the mons pubis to theperineumLabia minora- two smaller folds inside the labia majora that contain sebaceous folliculesoThey are joined together anteriorly by the clitoris and posteriorly by thefrenulumClitoris- small, pea shaped erectile body, homologous with the male penis and highlysensitive to tactile stimulationThese structures form the shape of a boat and are called the vestibuleUrethral meatus- appears as a dimple 2.5 cm posterior to the clitorisParaurethral (Skene) glands- tiny glands that open up below the urethral meatusVaginal orifice- posterior to the urethral meatus, appears as a thin slit or large openingdepending on the presentation of the hymenVestibular (Bartholin) glands- posterior to the vaginal orifice, secrete a clear lubricatingmucus during intercourseInternal GenitaliaIncludes the vaginia- a flattened, tubular canal extending from the orifice up andbackward into the pelvisoIt is 9 cm long and sits between the rectum posteriorly and the bladder andurethra anteriorlyRugae- thick, transverse folds that line the vaginal wall to enable it to dilate widelyduring childbirthCervix- in the nulliparous female (never had children) the female cervix appears as asmooth doughnut shape with a small circular hole, or the “os”oAfter childbirth the os is slightly enlarged and irregularAnterior and posterior fornix- a continuous recess around the cervixRectouterine pouch, or cul-de-sac of Douglas- deep recess behind the posterior fornix inthe rectumUterus- pear shaped, thick-walled muscular organoFreely moveable, not fixed, and usually tilts forward and superior to the bladder(position termed anteverted and anteflexed)Fallopian tubes- two pliable, trumphet-shaped tubes, 10cm in length extending from theuterine fundus laterally to the brim of the pelvisOvaries- two ovaries site on each site of the uterus and serve to develop ova (eggs) andthe female hormonesDevelopmental Competence
InfantsAt birth the external genitalia are engorged because of the presence of maternalestrogenoIt recedes in a few weeks until puberty hitsOvaries are located in the abdomen during childhoodThe uterus is small with a straight axis and no anteflexionThe first signs of puberty are breast development (thelarche) and pubic hairdevelopment starting at 8-10 yrs oldIrregularity of the menstrual cycle is common during adolescence because of theoccasional failure to ovulateTanners Sexual Maturity Ratings (SMR) in GirlsStage 1- preadolescent, no pubic hair, mons and labia covered with fine vellus hair as onabdomenStage 2- growth sparse and mostly on labia; long, downy hair, slightly pigmented,straight or only slightly curly

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Term
Spring
Professor
N/A
Tags
Uterus, Vulva, Vagina

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