The document provides an overview of human sexuality including its anatomical, physiological, psychological, and sociological aspects. It discusses topics like sexual development and puberty, male and female reproductive systems, the menstrual cycle, sexual hormones and fertility, and some common issues related to sexuality and reproduction.

1. HumAN Sexuality By: Miss Shenell A. Delfin Lecturer NCM 101

4. Aspects of sexual behavior Philosophical Sociological Psychological Anatomical Physiological Cognitive Learning Cultural Political Legal Moral Ethical Theological Spiritual Religious

5. Anatomical and physiological aspect

6. Teng-teng Va-jj Meet your new friends!!

10. Note homology between the penis and clitoris and between the scrotum and the labia majora.

13. Male Reproductive System

15. Male reproductive hormones Hormone Where produced Functions Testosterone Testes, adrenal glands Stimulate sperm production, secondary sex characteristics, sex drives GnRh Hypothalamus Stimulate pituitary during sperm production FSH Pituitary Sperm production in testes LH Pituitary Stimulates testosterone production within testes Inhibin Testes Regulates sperm production by inhiting release of FSH Relaxin Prostate Increase sperm motility

26. Female Reproductive System

28. Female reproductive hormones Hormone Where produced Functions Estrogen(estradiol, estrone, estriol) Ovaries, adrenal glands, placenta during pregnancy Promotes maturation of reproductive organs, secondary sex characteristics,& GD during puberty; regulates menstrual cycle; sustains pregnancy Progesterone Ovaries, adrenal glands Promotes breast dev’t, maintains uterine lining, regulates menstrual cycle GnRH- gonadotropin-releasing hormone Hypothalamus Promotes maturation of gonads, regulates menstrual cycle FSH Pituitary Regulates ovarian fxn and maturation of follicles

29. Female reproductive hormones Hormone Where produced Functions LH Pituitary Assist in production of estrogen & progesterone, regulates maturation of ovarian follicle, triggers ovulation HCG- human chorionic gonadotropin Embryo and placenta Helps sustain pregnancy Testosterone Adrenal glands & ovaries Helps stimulate sexual interest Oxytocin Hypothalamus Stimulate uterine contraction during childbirth prolactin pituitary Stimulates milk production

40. Menstrual Cycle

47. Psychological and sociological aspect

63. Female genital mutilation with clitoris possibly removed and labia sewed shut (female circumcision) Opening left for menstrual blood to escape.

65. homosexuality

66. homosexuality

74. Four-phase cycle of Physiological Responses The sequence of responses can overlap and fluctuate

86. Male Sexual Response Cycle Organ Excitement Phase Orgasmic Phase Resolution Phase Skin Just before orgasm: sexual flush inconsistently appears; maculopapular rash originates on abdomen and spreads to anterior chest wall, face, and neck and can include shoulders and forearms Well-developed flush Flush disappears in reverse order of appearance; inconsistently appearing film of perspiration on soles of feet and palms of hands Penis Erection in 10 to 30 seconds caused by vasocongestion of erectile bodies of corpus cavernosa of shaft; loss of erection may occur with introduction of asexual stimulus, loud noise; with heightened excitement, size of glands and diameter of penile shaft increase further Ejaculation ; emission phase marked by 5-15 seconds contractions of vas, seminal vesicles, prostate; ejaculation proper marked by contractions of urethra and ejaculatory spurt of 12 to 20 inches at age 18, decreasing with age to seepage at 70 Erection: partial involution in 5 to 10 seconds with variable refractory period; full detumescence in 5 to 30 minutes

87. Male Sexual Response Cycle Contd Scrotum and testes Tightening and lifting of scrotal sac and elevation of testes; with heightened excitement, 50% increase in size of testes over unstimulated state and flattening against perineum, signaling impending ejaculation No change Decrease to baseline size because of loss of vasocongestion; testicular and scrotal descent within 5 to 30 minutes after orgasm; involution may take several hours if no orgasmic release takes place Cowper's glands 2 to 3 drops of mucoid fluid that contain viable sperm are secreted during heightened excitement No change No change

88. Male Sexual Response Cycle Contd Other Breasts: inconsistent nipple erection with heightened excitement before orgasm Myotonia: semispastic contractions of facial, abdominal, and intercostal muscles Tachycardia: up to 175 beats a minute Blood pressure : rise in systolic 20 to 80 mm; in diastolic 10 to 40 mm Respiration: increased Loss of voluntary muscular control Rectum: rhythmical contractions of sphincter Heart rate: up to 180 beats a minute Blood pressure: up to 40 to 100 mm systolic; 20 to 50 mm diastolic Respiration: up to 40 respirations a minute

89. Female Sexual Response Cycle Organ Excitement Phase Orgasmic Phase Resolution Phase Skin Just before orgasm: sexual flush inconsistently appears; maculopapular rash originates on abdomen and spreads to anterior chest wall, face, and neck; can include shoulders and forearms Well-developed flush Flush disappears in reverse order of appearance; inconsistently appearing film of perspiration on soles of feet and palms of hands Breasts Nipple erection in two thirds of women, venous congestion and areolar enlargement; size increases to one fourth over normal Breasts may become tremulous Return to normal in about 30 minutes Clitoris Enlargement in diameter of glands and shaft; just before orgasm, shaft retracts into prepuce No change Shaft returns to normal position in 5 to 10 seconds; detumescence in 5 to 30 minutes; if no orgasm, detumescence takes several hours

90. Female Sexual Response Cycle Contd Labia majora Nullipara: elevate and flatten against perineum Multipara: congestion and edema No change Nullipara: decrease to normal size in 1 to 2 minutes Multipara: decrease to normal size in 10 to 15 minutes Labia minora Size increased two to three times over normal; change to pink, red, deep red before orgasm Contractions of proximal labia minora Return to normal within 5 minutes Vagina Color change to dark purple; vaginal transudate appears 10 to 30 seconds after arousal; elongation and ballooning of vagina; lower third of vagina constricts before orgasm 3 to 15 contractions of lower third of vagina at intervals of 0.8 second Ejaculate forms seminal pool in upper two thirds of vagina; congestion disappears in seconds or, if no orgasm, in 20 to 30 minutes

91. Female Sexual Response Cycle Contd Uterus Ascends into false pelvis ; labor-like contractions begin in heightened excitement just before orgasm Contractions throughout orgasm Contractions cease , and uterus descends to normal position Other Myotonia: A few drops of mucoid secretion from Bartholin's glands during heightened excitement Cervix swells slightly and is passively elevated with uterus Loss of voluntary muscular Control Rectum: rhythmical contractions of sphincter Hyperventilation and tachycardia Return to baseline status in seconds to minutes Cervix color and size return to normal , and cervix descends into seminal pool

93. SIX Points for SEX Preparation Position Duration Concentration Relaxation 3 2 1 4 5 Frequency 6

94. COITAL POSITION – diversity of coital position for greater satisfaction.

95. Benefits of SEX beyond reproduction

115. Fetishism sexual activity makes use of physical objects, sometimes in preference to contact with humans.

116. Transvetism a man occasionally prefers to wear women’s clothing, or less commonly, a woman prefers to wear men’s clothing.

117. Pedophilia is a preference for sexual activity with young children.

118. Exhibitionism a person ( usually a man ) exposes his genitals to unsuspecting strangers and becomes sexually excited when doing so.

119. Voyeurism a person becomes sexually aroused by watching someone who is disrobing, naked, or engaged in sexual activity.

120. Masochism it constitutes sexual enjoyment in being physically harmed, threatened, or abused

121. Sadism an opposite of masochism, is a sexual enjoyment a person receives from inflicting actual physical or psychologic suffering on a sex partner.

122. Frotteurism- sexual pleasure is obtained by touching or rubbing against a non consenting person

123. Zoophillia or bestiality- sexual contact with an animals

124. Coprophillia