chapter fourteen: exploring the origins of sexuality
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Chapter Fourteen: Exploring the Origins of Sexuality. Biological Bases of Human Sexuality. Genetic basis XX = female XY = male Gonadal basis Structural development Male genital development Female genital development Biological sexuality and the childhood years Puberty - PowerPoint PPT PresentationTRANSCRIPT
© 2009 McGraw-Hill Higher Education. All rights reserved.
Chapter Fourteen:
Exploring the Originsof Sexuality
© 2009 McGraw-Hill Higher Education. All rights reserved.
Biological Bases of Human Sexuality• Genetic basis
– XX = female– XY = male
• Gonadal basis• Structural development
– Male genital development – Female genital development
• Biological sexuality and the childhood years• Puberty
– Females: Menarche– Males
© 2009 McGraw-Hill Higher Education. All rights reserved.
Growth and Development of Sexuality
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Psychosocial Bases of Human Sexuality
• Psychosocial sexuality: Masculine and feminine aspects of sexuality
• Gender: Biological basis of sexuality• Gender identity: Recognition of one’s
gender• Gender preference: Emotional and
intellectual acceptance of one’s own gender
© 2009 McGraw-Hill Higher Education. All rights reserved.
Psychosocial Bases of Human Sexuality
• Gender adoption: The long process of learning the behavior that is traditional for one’s gender
• Gender identification: Achievement of a personally satisfying interpretation of one’s masculinity or femininity
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Androgyny
• Blending of both masculine and feminine qualities
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Male Reproductive System• Testes
– Sperm development– Interstitial cell-stimulating hormone– Follicle-stimulating hormone
• Scrotum• Ducts• Seminal vesicles• Prostate gland• Cowper’s glands• Penis
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Male Reproductive System
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Male Reproductive System
• Age-related hormone changes
• Male menopause (andropause)– Decrease in level of androgens– Prostate size increases
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Female Reproductive System
• Mons pubis• Labia majora and labia minora• Clitoris• Vestibule• Vagina• Uterus• Fallopian tubes• Ovaries
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Female Reproductive System
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Menstrual Cycle
• Menstrual phase – ¼ - ½ cup of blood and tissue is sloughed
off during a 5-7 day period
• Preovulation phase – Lasts about a week – Release of FSH and LH leading to
ovulation around day 14
• Post-ovulation phase – Build-up of endometrial tissue – Role of progesterone
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Menstrual Cycle
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Related Conditions• Premenstrual syndrome (PMS)
– Physical and psychological symptoms that recur during the same phase of the menstrual cycle
• Premenstrual dysphoric disorder (PMDD)– Severe form of PMS
• Fibrocystic breast condition – Excessive secretory activity producing swollen,
firm, or hardened tender breast tissue• Amenorrhea
– Absence of menstruation• Menopause
– Gradual decline in reproductive system function, usually by late 40s to mid 50s
© 2009 McGraw-Hill Higher Education. All rights reserved.
Additional Aspects of Human Sexuality• Reproductive sexuality
– Related to procreation
• Genital sexuality – Nonreproductive use of sex organs
(recreation and communication)
• Expressionistic sexuality – Cognitive, affective, and behavioral
expressions of one’s gender
© 2009 McGraw-Hill Higher Education. All rights reserved.
Chapter Fourteen: Exploring the Origins of Sexuality