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Sexual Intercourse,Conception
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Sexual Intercourse,Conception

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  • 1. SEXUAL INTERCOURSE
    • COITUS OR COPULATION
    • AT SOME POINT PENIS IS INSERTED INTO VAGINA
    • SEXUAL RESPONSE CYCLE
    www.freelivedoctor.com
  • 2. THE FOUR PHASES OF SEXUAL CYCLE
    • EXCITEMENT
    • PLATEAU
    • ORGASM
    • RESOLUTION
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  • 3. EXCITEMENT
    • CAN BE INITIATED PHYSICALLY (TACTILE STIMULI)AND/OR PSYCHOLOGICALLY
    • CLITORIS, SURROUNDING PERINEAL AREA AND PENIS ARE PRIMARY AREAS FOR THIS
    • OTHER SENSITIVE AREAS MAY CONTRIBUTE IF STIMULATED, BREASTS, TESTICLES, ETC.
    • ERECTION OF PENIS AND CLITORIS RESULT (CLITORIS IS A HOMOLOGUE OF THE PENIS)
    • LUBRICATION FROM VAGINAL CAPILLARIES, GLANDS AT OPENING OF VAGINA AND PENIS PREPARE FOR INTERCOURSE
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  • 4. PLATEAU
    • INTENSIFICATION OF CHANGES DURING EXCITEMENT PHASE
    • HEART RATE AND BREATHING CHANGES
    • MUSCLE TENSION INCREASES
    • VAGINA TIGHTENS AROUND PENIS HEIGHTENING SENSATION
    • UTERUS RAISES UPWARD CREATING SPACE FOR EJACULATE
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  • 5. MALE ORGASM
    • RHYTHMIC CONTRACTIONS DURING SEMEN EXPULSION
    • INVOLUNTARY RHYTHMIC THROBBING OF PELVIC MUSCLES
    • BREATHING AND HEART RATE INCREASED
    • EMOTIONAL RESPONSE: RELEASE AND COMPLETE GRATIFICATION
    • RESOLUTION PHASE INVOLVES SYMPATHETIC VASOCONSTRICTION
    • A REFRACTORY PERIOD PREVENTS MULTIPLE ORGASMS IN THE MALE
    www.freelivedoctor.com
  • 6. EPIDIDYMUS, VAS DEFERENS, URETHRA: EJACULATION
    • ROUTE OF EXIT OF SPERM
    • DUCTUS DEFERNS STORES SPERM
    • DURING EMMISSION PHASE OF EJACULATION SPERM ARE EMPTIED INTO URETHRA BY SYMPATHETICALLY INDUCED CONTRACTIONS
    • MOTOR NEURON INDUCED CONTRACTIONS OF SKELETAL MUSCLES AT BASE OF PENIS EXPELL THE SEMEN DURING EXPULSION PHASE OF EJACULATION
    • EJACULATION IS A PART OF ORGASM
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  • 7. FEMALE ORGASM
    • PARALLELS THAT IN MALES WITH TWO EXCEPTIONS
    • NO COUNTERPART TO EJACULATION
    • NO REFRACTORY PERIOD-MULTIPLE ORGASMS POSSIBLE
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  • 8. SEX DETERMINATION AND DIFFERENTIATION
    • SEX CHROMOSOMES X AND Y
    • 22 PAIRS AUTOSOMAL
    • 1 PAIR DETERMINES SEX: XX OR XY
    • FEMALE REPRODUCTIVE TRACT AND EXTERNAL GENETALIA DEVELOP REGARDLESS
    • TESTOSTERONE PRODUCES MALE CHARACTERISTICS
    • EVIDENT AFTER 10 TO 12 WEEKS
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  • 9. MALE REPRODUCTIVE PHYSIOLOGY
    • DEPENDS ON TESTOSTERONE
    • TESTICULAR LEYDIG CELLS SECRETE TESTOSTERONE
    • TESTES DESCEND AND PASS OUT OF ABDOMINAL CAVITY
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  • 10. TESTOSTERONE: BEFORE BIRTH
    • BEFORE BIRTH:MASCULINIZES REPRODUCTIVE TRACT AND EXTERNAL GENETALIA
    • DESCENT OF TESTES
    • CEASES AT BIRTH
    • RETURNS AT PUBERTY
    www.freelivedoctor.com
  • 11. PUBERTY IN THE MALE
    • USUALLY 10-14 YEARS OLD
    • ENDOCRINE,PHYSICAL, AND BEHAVIORAL
    • LEYDIG CELLS “AWAKE”
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  • 12. TESTOSTERONE: AT PUBERTY
    • SPERMATOGENESIS
    • ACCESSORY SEX GLANDS ENLARGE AND BECOME SECRETORY
    • PENIS AND SCROTUM ENLARGE
    • LIBIDO
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  • 13. EFFECTS OF TESTOSTERONE ON SECONDARY SEX CHARACTERISTICS
    • HAIR GROWTH PATTERN
    • DEEP VOICE
    • THICK SKIN
    • MALE BODY CONFIGURATION
    www.freelivedoctor.com
  • 14. OTHER EFFECTS OF TESTOSTERONE
    • BONE GROWTH
    • PROTEIN ANABOLIC EFFECT
    • EVENTUALLY STOPS BONE GROWTH
    • AGGRESSIVE BEHAVIOR(IN ANIMALS)
    • MALE MENOPAUSE
    www.freelivedoctor.com
  • 15. CONTROL OF TESTICULAR FUNCTION HYPOTHALAMUS ANTERIOR PITUITARY GRH + TESTES SERTOLI CELL LEYDIG CELL TESTOSTERONE INHIBIN SPERMATOGENESIS FSH LH www.freelivedoctor.com
  • 16. FEMALE REPRODUCTIVE PHYSIOLOGY
    • CYCLIC
    • OOGENESIS
    • FERTILIZATION
    • PREGNANCY
    • DELIVERY
    • MENOPAUSE
    www.freelivedoctor.com
  • 17. THE OVARIAN CYCLE
    • FOLLICULAR PHASE
    • LEUTEAL PHASE
    • ONLY INTERRUPTED BY PREGNANCY
    • ENDS AT MENOPAUSE
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  • 18. FOLLICULAR PHASE
    • PRIMARY OOCYTE IS IN A PREPARATORY PHASE
    • FIRST MEIOTIC DIVISION
    • OVULATION
    • ESTROGEN SECRETED FROM FOLLICLE
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  • 19. LEUTEAL PHASE
    • AFTER OVULATION
    • DEVELOPMENT OF CORPUS LUTEUM
    • SECRETES PROGESTERONE AND ESTROGEN
    • DEGENERATES AFTER 2 WEEKS IF NOT FERTILIZED
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  • 20. IF NOT FERTILIZED
    • CORPUS LEUTEUM DEGENERATES
    • ESTROGEN AND PROGESTERONE LEVELS FALL
    • MENSTRUAL PHASE INVOLVES SLOUGHING OF PREPARED ENDOMETRIUM
    • NEW CYCLE STARTS-NEW FOLLICLES DEVELOP AND BEGIN SECRETING ESTROGEN
    www.freelivedoctor.com
  • 21. CONTROL OF FSH AND LH SECRETION DURING FOLLICULAR PHASE HYPOTHALAMUS ANTERIOR PITUITARY GRH + OVARY LOW LEVELS OF ESTROGEN INHIBIN FSH LH www.freelivedoctor.com
  • 22. CONTROL OF LH SURGE AT OVULATION HYPOTHALAMUS ANTERIOR PITUITARY GNRH + OVARY HIGH LEVELS OF ESTROGEN OVULATION FSH LH MATURE FOLLICLE www.freelivedoctor.com
  • 23. FEEDBACK CONTROL DURING LUTEAL PHASE HYPOTHALAMUS ANTERIOR PITUITARY GNRH + OVARY HIGH LEVELS OF PROGESTERONE LH CORPUS LUTEUM MODERATE LEVELS OF ESTROGEN www.freelivedoctor.com
  • 24. FERTILIZATION
    • IN OVIDUCT
    • SPERM DEPOSITED IN VAGINA AT EJACULATION
    • TRAVEL TO OVIDUCT TAKES A LITTLE OVER 1/2 HOUR
    • CERVICAL CANAL IS OPEN DUE TO ESTROGEN BEING HIGH AND REMAINS OPEN TWO TO THREE DAYS
    • SPERM ENTER UTERUS AND ARE CHURNED AROUND
    • WHEN REACH OVIDUCT, SMOOTH MUSCLE CONTRACTIONS PROPELL THEM ONWARD
    • MATURE EGG RELEASES A CHEMOTACTIC AGENT
    • OUT OF SEVERAL HUNDRED MILLION ONLY A FEW THOUSAND MAKE IT
    • TAIL OF SPERM MANEUVERS IT FOR FINAL PENETRATION
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  • 25. HORMONES OF PREGNANCY
    • PLACENTA IS ORGAN OF EXCHANGE
    • PLACENTA SECRETES HUMAN CHORIONIC GONADOTROPIN (HCG)-PROLONGS LIFE OF CORPUS LUTEUM
    • ESTROGEN AND PROGESTERONE LEVELS EVEN HIGHER NOW
    • AFTER 10 WEEKS PLACENTA TAKES OVER
    www.freelivedoctor.com
  • 26. PARTURITION
    • POSITIVE FEEDBACK
    • CERVICAL DILATION
    • DELIVERY
    • DELIVERY OF PLACENTA
    www.freelivedoctor.com
  • 27. LACTATION
    • MAMMARY GLANDS OR BREASTS
    • MILK PRODUCING GLANDS AND FAT
    • ACTION OF ESTROGEN AND PROGESTERONE IS TO PREPARE GLANDS DURING PREGNANCY
    • ALSO BLOCK PROLACTIN’S STIMULATION
    • OXYTOCIN-MILK EJECTION
    • SUCKLING TRIGGERS OXYTOCIN RELEASE
    www.freelivedoctor.com

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