1 Male

2 l The mechanism that maintains life from one generation to the next The Reproductive System

3 Anatomy of the Male Reproductive System

4 The External Male Anatomy 1. Penis -The external male reproductive organ and is located in front of the scrotum. It is made of a spongy erectile tissue. During sexual arousal, the spaces in this tissue fill with blood, causing the penis to become erect. It is the male organ of copulation, deposits the semen in the vagina and urine. 2. Scrotum -pouch of skin that hangs at root of penis and contains the testes. Provides temperature about 2-3  C below body temperature (96.6) for proper sperm production. Sensitive area.

5 The External Male Anatomy 3. Foreskin- Covers the glans penis which is sometimes removed surgically in a procedure called a circumcision. 4. Glans- At the distal end of the penis. It is an enlarged structure that may be covered with foreskin 5. Opening to the Urethra- An outlet for urine or sperm

6 The Internal Male Anatomy 1. Vas Deferens -also called the ducts deferens, receives sperm and fluid from the epididymis. This structure acts as a passageway and storage area for sperm. 2. Epididymis – is a tightly coiled tube approximately 20 feet in length that stores sperm while they mature and become motile.

7 The Internal Male Anatomy 3. Prostate Gland- a doughnut- shaped gland located below the urinary bladder and on either side of the urethra. The muscular tissue in this gland contracts during ejaculation to aid in the expulsion of the semen into the urethra 4. Seminal Vesicles- two small pouch-like tubes that contain a lining which produces a yellow, sugar based fluid that nourishes sperm and composes a large part of the semen

8 The Internal Male Anatomy 5. Urethra- carries urine from the bladder and semen from the reproductive tubes. 6. Testes- The male gonads. These produce sperm

9 Erection l Erectile tissue of penis, corpora cavernosa becomes engorged with blood l Parasympathetic nerve fibers stimulate arterioles to dilate, increasing blood flow l Blood flow is cut off trapping blood causing penis to stiffen and become elongated

10 Ejaculation l Propulsion of semen from male duct system l Reproductive ducts & accessory glands contract peristalticly emptying their contents into urethra l Bladder sphincter muscle constricts preventing expulsion of urine

11 Semen l Mixture of sperm & secretions l Transport medium, nutrients, & chemicals that protect & facilitate movement of sperm l Basic pH neutralizes acidic environment of vagina l ml released during ejaculation l million sperm in each ml l healthy male produces several hundred million sperm per day

12 Puberty l The stage of growth and development when both the male and female body become capable of producing an offspring.

13 Puberty in Males l Begins at between the ages of years old. l A male experiences physical and emotional changes

14 Puberty in Males l At puberty testosterone prompts spermatogenesis l Causes reproductive organs to grow & assume adult functions l As adult normal levels of testosterone are required to maintain normal structure & function of reproductive organ

15 Male Secondary Sex Characteristics include: Growth of testicles and scrotal sac Growth of pubic hair Body Growth Growth of penis Change in voice Facial and Underarm Hair Acne

16 Testicular Cancer l Cancer of the testicles accounts for only about 1 percent of all cancers in men, but it is the most common type of cancer in males ages 16 to 35, and it can occur anytime after age 15. l Risk Factors: –A family history of testicular cancer. (If you don’t know, ask.) –Having an identical twin with testicular cancer. –Injury to the scrotum or to a testicle. –It’s five times more common among white than black males.

17 Testicular Examination 1) The Best Time to Perform the Self-Exam l Dermatologists recommend that you perform the testicular self-exam while you're taking a warm bath, under the shower or just getting out of the tub. Exposure to warmth and moisture will make your scrotal skin more relaxed and accessible, making a thorough inspection easier. 2) Practice Proper Technique l Perform the self-exam one testicle at a time. Dealing with a single uniform surface assures you more accuracy and thoroughness. Take your testicle with both hands, placing the thumbs at the top, near the base of the penis. Grip the back of the testicle gently using both your middle finger and your index finger. Exert gentle pressure to roll your testicle by pushing your thumb and fingers towards each other. l If you have the right grip, you'll feel the sperm-holding chamber in your testicle called the epididymis, and this is how a healthy, proper testicle lump feels. Run your fingers closely over the surface of your scrotum, checking for lumps. It's normal for ingrown hairs that look like white bumps to be present. You're checking for lumps that don't go away over time and are discolored, irregularly shaped, shiny or painful to touch.Run 3) Follow up With Your Physician l If you find any lumps or notice discoloration or swelling of your testicles, it's better to err on the side of caution and pay a visit to your doctor. The prognosis for testicular cancer, and all other forms of cancer, is much better when the disease is detected in an early stage. If you notice persistent, unexplained tenderness or soreness in your groin, you should also find out what's causing it. This may be a secondary signal that you are developing a cancerous tumor in your nether region. l Read more:

18 Signs to Look For l Small, painless lump in a testicle l Enlarged testicle l Feeling of heaviness in the testicle or groin l Pain in the testicle l A change in the way the testicle feels l Enlarged male breasts and nipples l Blood or fluid that accumulates suddenly in the scrotum. Read more: testicular-cancer/#ixzz1LLwiTnh8http:// testicular-cancer/#ixzz1LLwiTnh8