female sexual anatomy and physiology. genital self-exam increases sexual comfort monitor for changes...
TRANSCRIPT
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Female Sexual Anatomy and Physiology
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Genital Self-Exam
• Increases sexual comfort
• Monitor for changes related to health concerns
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The Vulva
• External female genitalia
• Mons Veneris
• Labia majora & minora
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The Vulva (cont.)
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The Vulva (cont.)
• Clitoris (analogous to penis)– external shaft & glans, internal crura clitoral
hood– only function = sexual arousal– Clitoral stimulation most common way woman
achieve orgasm• Female genital mutilation
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The Vulva (cont.)
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The Vulva (cont.)
• Vestibule – urethral opening– vaginal introitus (opening)
• hymen
• Perineum– episiotomy
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Underlying Structures
• Vestibular bulbs
• Bartholin's glands
• Pelvic floor muscles– Kegel exercises
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Underlying Structures
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Internal Structures
• Vagina – 3 layers: mucous, muscle, fibrous– Arousal and vaginal lubrication
• lubrication changes vaginal ph and increases pleasure
– Grafenberg (G) spot– Secretions & chemical balance
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Internal Structures (cont.)
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Internal Structures (cont.)
• Cervix
• Uterus– 3 layers: perimetrium, myometrium,
endometrium– fundus (top)
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Internal Structures (cont.)
• Fallopian tubes– fimbriae – cilia (hairlike cells that move ovum)– fertilization occurs when egg is still close to
ovary• Ectopic pregnancy
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Internal Structures (cont.)
• Ovaries– up to 472,000 immature ova at birth; 400
mature in lifetime– ovulation = release of ovum
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Menstruation
• Myths and negative attitudes
• Menarche (initial onset)– age 11-15– related to heredity, health, altitude
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Menstruation (cont.)
• Menstrual physiology– flow lasts from 2 to 6 days– volume varies (6 to 8 ounces)– duration varies (24 to 42 days) – menstrual synchrony
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Menstruation (cont.)
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Menstruation (cont.)
• The menstrual cycle– hypothalamus releases GnRH that stimulates
pituitary– pituitary produces:
• Follicle Stimulating Hormone • Luteinizing Hormone
– Negative feedback mechanism• Follicle Stimulating Hormone • Luteinizing Hormone
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Menstruation (cont.)
Changes during the menstrual cycle (a) indicates the hypothalamus in the brain measuring levels of hormones and releasing GnRh to stimulate the pituitary to secrete FSH and LH into the bloodstream (b) shows how the levels of FSH (red line) and LH (purple line) vary during the complete cycle. Note the midcycle peak of LH that stimulates ovulation (c) shows the ovarian changes during the phases of the cycle and (d) shows the fluctuations in blood levels of estrogen and progesterone produced by the ovaries and (e) indicates these hormonal effects on the lining of the uterus. After ovulation, the glands and ducts inside the endometrium (drawn and vertical tubes and spirals) develop and secrete nutrients that, if a woman became pregnant, would support the embryo.
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Menstruation (cont.)
• Three phases of menstrual cycle– menstrual: shedding of endometrium– proliferative: thickening of endometrium &
follicle maturation, ovulation– secretory: corpus luteum development further
thickening of endometrium
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Menstruation (cont.)
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Menstruation (cont.)
Fig. 4.8 The changes to the ovaries and uterus during (b) the secretory phase, and (c) the menstrual phase of the menstrual cycle.
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Menstruation (cont.)
• Sexual activity and the menstrual cycle• Menstrual cycle problems
– premenstrual syndrome: • Premenstrual Dysphoric Disorder
– dysmenorrhea = painful menses– amenorrhea = no menses– toxic shock syndrome– self-help for menstrual symptoms
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Menopause
• Terms– climacteric– peri-menopause: time before menopause– menopause: permanent cessation of
menstruation
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Menopause (cont.)
• Symptoms vary from mild to strong– amenorrhea, then menopause– hot flashes or warm spells– night sweats, interrupted sleep – headaches, poor concentration– depression, anxiety
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Menopause (cont.)
• Hormone replacement therapy– estrogen reduces hot flashes and psychological
symptoms– controversies with data reporting hazardous
effects– increased risk of breast cancer with exclusive
use of estrogen – alternatives to HRT
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Gynecological Health Concerns
• Urinary tract infections
• Vaginal infections
• Self-exams & vaginal health care
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Gynecological Health Concerns (cont.)
• Pap smear screens for cervical cancer
• Hysterectomy or oophorectomy– most frequently performed U.S. operation,
more frequently performed on low income, less educated women
– nonsurgical alternatives
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The Breast
• mammary glands produce milk– fatty tissue determines size
• areola is darker area
• nipple is in center of areola & has openings for milk
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The Breast (cont.)
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The Breast (cont.)
• Breast exams– self-exam following menstruation– routine healthcare provider exams– mammography
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The Breast (cont.)• Breast exams
Fig. 4.9 It is helpful to use a chart similar to this one to keep track of lumps in the breasts.
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The Breast (cont.)
• Breast lumps– cysts (fluid-filled sacs)
– fibroadenomas (solid, round, benign tumors)
– malignant tumor
• Breast cancer– treatments
– risk factors
– reconstructive breast surgery
– benefits of early detection & treatment
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The Breast (cont.)
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The Breast (cont.)
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