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Sexual Anatomy

Class Activity

External Female Organs: The Vulva

¨ Mons pubis (mons veneris): 

¨ Labia majora:  mostly fat & some smooth muscle, has sweat, oil glands, & nerve endings

¨ Labia minora: spongy tissue (no fat), lots of blood vessels), meet just above clitoris forming the clitoral hood

¨ Clitoris: 

n  Clitoral glans: visible part

¨ Perineum

¨ Introitus

Female Anatomy: Internal Structures

n     Hymen:  thin membrane that covers the opening of the vagina (introitus) prior to first intercourse or other intrusion

n     Vagina: 

n     G-spot:  located on front wall of vagina midway between pubic bone and cervix

n     Cervix: 

n     Uterus (womb): a hollow, thick-walled, muscular organ.

n     Fallopian tubes:  hollow tubes whose inside lining is covered with cilia

n     Ovaries: 

Gynecological Health Concerns : Urinary Tract Infections

Gynecological Health Concerns : Vaginal Infections

n    Vaginitis

n   

n    Risk factors include

Male Anatomy

n     Penis:  3 cylinders of spongy tissue

Male Anatomy: The Penis

n   Glans:

n   Coronal Ridge: The rim of tissue that separates the glans from the shaft of the penis

n   Frenulum: The small triangular region of the underside of the penis where a thin strip of skin attaches to the glans

n   Foreskin (prepuce): an additional layer of skin which forms a sheath like covering over the glans

n   Urethral Opening

Male Anatomy: Structures

n    Scrotum:  loose sac that covers the testicles

n    Testes: 

n    Epididymis:  coiled tube (about 20 feet long) where sperm mature

n    Vas deferens:  moves sperm from scrotum to ejaculatory duct within prostate gland (about 18 inches long)

n    The seminal vesicles are two small glands adjacent to the terminals of the vas deferens (secretes about 70% of seminal fluid).

n    Prostate gland: 

n    Cowper’s (bulbourethral) glands:  secretes preejaculatory fluid

n    Urethra: 

Male Genital Health Concerns

n    Penile Cancer

n    Symptoms

n    Risk Factors

Male Genital Health Concerns

n   Testicular Cancer

n   Symptoms

¨ Usually none other than a mass within the testis during early stage

¨ Sometimes tenderness, fever, dull ache in groin, tender breasts and nipples, painful swelling in scrotum.

Female Genital Cutting

Male Circumcision

Sexual Response

Class Activity

Sexual Response Cycle
(Masters & Johnson)

Excitement Phase

Plateau Phase

Orgasm

Resolution Phase

Sexual Response
 Kaplan's three-stage model

n    Desire

n    Excitement

n    Orgasm

Sex Hormones

 

 Sexual Arousal & The Brain

n   Cerebral Cortex (mental events)

n   Limbic system affects feeling & behavior

n   Neurotransmitters

¨ Dopamine: facilitatory impact

¨ Serotonin: inhibitory impact

Sexual Arousal & The Senses

n   Touch: dominant "sexual sense"

¨ primary erogenous zones

¨ secondary erogenous zones

n   Vision: usually next in dominance

¨

n   Smell may arouse or offend

¨ exposure to a human pheromone increases attractiveness ratings

n   Taste plays a minor role

n   Hearing plays a variable role

Aphrodisiacs

Anaphrodisiacs