Reproductive System Male Reproductive System Testes • Also called gonads • 2 of them • Suspended in a sac called the scrotum • Produce sperm • Located outside the body where the temperature is lower and won’t kill the sperm • Produces testosterone, male hormone • Testosterone is responsible for secondary sex characteristics such as deeper voice, facial hair, larger muscles, and body hair Epididymis • Sperm leave the testes and enter the epididymis • Tightly coiled tube, 20 feet long • Located in the scrotum, just above the testes • Function – Store sperm until it matures – Produce fluid which becomes part of semen Vas Deferens • Function – Receives sperm from the epididymis – Temporarily stores sperm • Extends from the epididymis into the abdominal cavity • Tube that is cut during a vasectomy, the procedure to produce sterility in males Seminal Vesicles • 2 small tubes located behind the bladder • Function – Produce a thick, yellow, rich in sugar that nourish the sperm – This fluid composes a large part of the semen Ejaculatory Ducts • 2 short tubes • Carry sperm and fluids known as semen through the prostate gland into the urethra Prostate Gland • Doughnut – shaped • Located below the bladder • Produces an alkaline secretion that increases sperm motility and neutralizes the acidity of the vagina • During ejaculation, the prostate gland – Contracts causing the expulsion of semen – Closes off the urethra, preventing urine passage through the urethra Cowper’s Gland • 2 small glands located below the prostate gland • Secrete a mucous-like fluid that serves as a lubricant for intercourse and an alkaline fluid to decrease the acidity of the urine residue in the urethra Urethra • Tube that extends from the bladder, through the penis, to the outside of the body • Carries semen and urine • 5-7 inches long in male Penis • External male reproductive organ • Enlarged structure on the end of the penis – glands penis • This is covered by the prepuce or foreskin • The foreskin is removed in a procedure called circumcision • Penis is made of spongy, erectile tissue • Functions – When erect, male organ of copulation/intercourse – Provides for the elimination of urine from the bladder Diseases Prostatic Hypertrophy • Enlargement of the prostate gland • Common in men over 50 years old • Causes – – – – Benign, due to inflammation Tumor Change in hormonal activity Malignant (cancerous) condition • Treatment – Prostatectomy – TUR – trans urethral resection – Radiation Testicular Cancer • Cancer of the testicles • Frequent in men 20-35 • Highly malignant and spreads quickly • Treatment – Orchiectomy, radiation • ACS – American Cancer Society – Recommends STE – Self testicular exam Self Testicular Exam • STE should start at age 15 • Examine each testicle after a warm shower, exam each testicle separately, gently roll between fingers and thumb to feel for lumps, nodules or extreme tenderness • Also check for any signs of swelling or change in appearance Female Reproductive System Ovaries • Female gonads • 2 small almond-shaped glands, located in the abdominal cavity, attached to the uterus by ligaments • Contains thousands of small sacs called follicles • Each follicle contains an immature egg or ovum • Produce the hormones estrogen and progesterone • Responsible for the secondary sex characteristics – breasts, hips widen, body hair Ovulation • The maturing and release of an egg every • Occurs every 28 days • If egg is not fertilized, the body sheds the lining of the uterus and menstruation occurs Fallopian Tubes • 2 of them • 5 inches in length • Attached to the upper part of the uterus • Function – Move the ovum from the ovary to the uterus – Cilia and peristalsis keep the ovum moving – Site of fertilization, the union of the egg and sperm Uterus • Hollow, muscular, pear-shaped organ • 3 parts – Fundus – top – Body – middle – Cervix – narrow bottom • Function – Organ of menstruation – Allows for the development and growth of the fetus – Contracts during birth to aid in the expulsion of the fetus • Layers - endometrial - If fertilization does not occur, this lining deteriorate, resulting in menstruation Vagina • Muscular tube that connects the cervix to the outside of the body • Function – Passageway for menstrual flow – Receives sperm and semen from the male – Female organ of copulation – Birth canal during delivery of the infant Bartholin’s Glands • 2 small glands on either side of the vaginal opening • Secretes mucous for lubrication during intercourse <> Vulva • Collective name for the external female genitalia • Includes – Mons pubis - pad of fat – Labia majora – outer folds of tissue covered with pubic hair – Labia minora – inner folds of tissue – Perineum – area between the vagina and anus Breasts • Mammary glands • Contain lobes that surface at the nipples • Function – Secrete milk – lactate after childbirth Diseases Female Reproductive System Breast Tumors • Benign or • American Cancer Society recommends SBE • Self Breast Examination every month for adult females at the end of menstruation SBE Mammograms • ACS recommends a baseline test between 35-40 Treatments • • • • • Lumpectomy Simple mastectomy Radical mastectomy Radiation Chemotherapy Cancer of the Cervix • Detected by a PAP smear • Treatment – Hysterectomy – Removal of cervix and uterus Endometriosis • Growth of endometrial tissue outside the uterus • Can occur during surgery, through the fallopian tubes, blood and lymph PMS Premenstrual Syndrome • Group of symptoms that appear 3-14 days before menstruation • Cause – unknown • Related to hormonal changes or biochemical imbalance