Chapter 4 - Chapter 4: Male Sexual Anatomy and Physiology...

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Chapter 4: Male Sexual Anatomy and Physiology Sexual Anatomy The Penis A male sexual organ consisting of the internal root and the external shaft and glans Consists of nerves, blood vessels, fibrous tissue, and three parallel cylinders of spongy tissue Extensive network of muscles is present at the base of the penis which help eject semen and urine Root: the portion of the penis that extends internally into the pelvic cavity Shaft: the length of the penis between the glans and the body Glans: the head of the penis; it is richly endowed with nerve endings Cavernous bodies: structures in the shaft of the penis that engorge with blood during sexual arousal Spongy body: a cylinder that forms a bulb at the base of the penis, extends up into the penile shaft, and forms the penile glans Foreskin: a covering of skin over the penile glans Sexuality and Diversity: Male Genital Modification: Cultural Beliefs and Practices Circumcision: surgical removal of the foreskin Practiced in many societies for religious, ritual, or hygienic reasons Evidence as far back as 6000 BCE Jews: o Practiced according to scripture as a religious rite o Bris – takes place on the 8 th day after birth Superincision: foreskin is split lengthwise along its top portion Practiced among South Pacific cultures as a king of rite of passage or initiation ritual into sexual maturity Castration: removal of the testes Extreme male genital mutilation Prevents sexual activity between harem guards (eunuchs) and their charges Render captives docile Preserve the soprano voices of European choirboys during the Middle Ages Part of religious ceremonies Purported cure for the evils of masturbation – in the 19 th century US Entire penis is sensitive to touch but the greatest concentration of nerve endings is found in the glans Corona – rime of the penile glans Frenulum – a highly sensitive thin strip of skin that connects the glans to the shaft on the underside of the penis Strengthening Musculature Around the Penis Kegels
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Chapter 4: Male Sexual Anatomy and Physiology Positive changes include: o Stronger and more pleasurable orgasms o Better ejaculatory control o Increased pelvic sensation during sexual arousal The Scrotum Pouch of skin of the external male genitals that encloses the testes. Consists of 2 layers:
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Chapter 4 - Chapter 4: Male Sexual Anatomy and Physiology...

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