HDFS 3400 Chapter 4 Notes
HDFS 3400 Chapter 4 Notes 3440
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This 4 page Class Notes was uploaded by Caroline Bacevice on Wednesday February 4, 2015. The Class Notes belongs to 3440 at Ohio State University taught by Katye Miller in Spring2015. Since its upload, it has received 106 views. For similar materials see Human Sexuality in Human Development at Ohio State University.
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Date Created: 02/04/15
Human Sexuality Chapter 4 Sexual Anatomy The Penis a male sexual organ consisting of internal root and the external shaft and glans Consists of nerves blood vessels fibrous tissue 3 parallel cylinders of spongy tissue 0 Root the portion of the penis that extends internally into the pelvic category 0 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 o Cavernous bodies the structure in the shaft of the penis that engorge with blood during sexual arousal o 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 o Foreskin a covering of skin over the penile glans Corona the rim of the penile glans o Frenulum a highly sensitive thin strip of skin that connects the glans to the shaft on the underside of the penis O 0 Strengthening Musculature Around the Penis o Kegel exercises can produce benefits for men similar to those experienced by women The Scrotum the pouch of skin of the external male genitals that encloses the testes o Testis male gonad inside the scrotum that produces sperm and sex hormones o Spermatic cord a cord attached to the testis that contains the vas deferens sperm carrying tube blood vessels nerves and cremasteric muscle fibers 0 The scrotum is sensitive to any temperature change I When cooled the tunica dartos contracts wrinkling the outer skin layer and pulling the testes up closer to the warmth of the body I Sudden fear can cause strong contractions of this muscle I Cremasteric re ex initiate contractions by stroking the inner thighs The Testes 0 Two major functions secrete sex hormones and produce sperm 0 Cryptorchidism a condition in which the testes fail to descend from the abdominal cavity to the scrotal sac 0 Average scrotal temperature is several degrees lower than body temperature Sperm production appears to be optimal at this lower temperature 0 The Seminiferous Tubules thin coiled structures in the testes in which sperm are produced I Interstitial cells cells located between the seminiferous tubules that are the major sources of androgen in males 0 Epididymis the structure along the back of each testis in which sperm maturation occurs C shaped The Vas Deferens a spermcarrying tube that begins at the testis and ends at the urethra o Vasectomy male sterilization procedure that involves removing a section from each vas deferens o Ejaculatory ducts two short ducts located within the prostate gland o Urethra the tube which urine passes from the bladder to the outside of the body The Seminal Vesicles small glands adjacent to the terminals of the vas deferens that secrete an alkaline uid conductive to sperm motility that constitutes the greatest portion of the volume of seminal uid released during ejaculation The Prostate Gland a gland located at the base of the bladder that produces about 30 of the seminal uid released during ejaculation The Cowper s Glands bulbourethral glands two peasized glands located alongside the base of the urethra in the male that secrete an alkaline uid during sexual arousal Semen or seminal uidA viscous uid ejaculated through the penis that contains sperm and uids from the prostate seminal vesicles and the Cowper s glands o Males roughly ejaculate 1 teaspoon 200 million 500 million sperm Male Sexual Functions Erection the process by which the penis or clitoris engorges with blood and increases in size 0 The capacity for an erection is present at birth 0 Erections are a physiological response but also involve psychological components Ejaculation the process by which semen is expelled from he body through the penis Emission phase the first stage of a male orgasm in which the seminal uid is gathered in the urethral bulb Expulsion phase the second stage of male orgasm during which the semen is expelled from the penis by muscular contractions Retrograde ejaculation the process by which semen is expelled into the bladder instead of out of the penis Nocturnal emission involuntary ejaculation during sleep also known as a wet dream Concerns About Sexual Functioning Penis Size 0 O Phalloplasy penis augmentation Men often come to view size in and of itself as an important attribute in defining their masculinity or their worth as lovers Penis size is not related to body shape height length of fingers race or anything else Genital retraction syndrome GRS unusual culturebound phenomenon in which a male believes his penis is shrinking and retracting into his body I koro a widely used term for the genital retraction syndrome Circumcision surgical removal of the foreskin of the penis O O O Practiced for religious ritual or health reasons About 80 of men in the US are circumcised Health benefits area under if not routinely cleaned can harbor a variety of infection causing organisms decreases incidence of UTIs penile cancer and genital wart infections Strong evidence provides increased protection against HIV Health Risks hemorrhage infections mutilation shock and psychological trauma Phimosis a condition characterized by an extremely tight penile foreskin Male Genital Health Concerns Urology the medical specialty dealing with reproductive health and genital diseases of the male and urinary tract diseases in both sexes The Penis Health Care Issues 0 Smegma a cheesy substance of glandular secretions and skin cells that sometimes accumulates under the foreskin of the penis or hood of the clitoris Penile Cancer I Approximately 1300 US men develop penile cancer in a given year I Only half will be alive 5 years later Testicular Cancer 0 12 of all cancers that occur in males 0 Risk factors smoking family history being white and cryptorchidism Diseases of the Prostate Prostatis when the prostate becomes enlarged and in amed often as a result of an infectious agent 0 Affects about 10 of men of all ages but most often occurs in their 40s Symptoms pain in pelvic area lower abdominal ache backache aching testes urgent need to urinate frequently burning sensation when urinating cloudy discharge painful erections and ejaculations and reduced sexual interest Benign Prostatic Hyperplasia as men grow older the prostate gland tends to increase in size Prostate Cancer Second most frequently diagnoses cancer after skin cancer and second leading cause of cancer death after lung cancer for males 240000 men each year are diagnosed About 34000 die from the cancer each year Frequent sexual activity has been reported to reduce the risk of prostate cancer Incidence is 70 higher in Black men than White men and Black men have a lower survival rate Symptoms similar to prostatitis Treatment watchful waitingquot radical prostatectomy cryotherapy radiation or orchidectomy
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