Male Reproductive Systems

Front 1

Testes

Back 1

• Comprised of a mass of seminiferous tubules
• Sperm production
• These are oval organs about the size of large olives that lie in the scrotum, secured at either end by a structure called the spermatic cord.
• Most men have two testes.
• The testes are responsible for making testosterone, the primary male sex hormone, and for generating sperm.
• Within the testes are coiled masses of tubes called seminiferous tubules. Thes
• Is the location where mitosis and meiosis create male sex cells called sperm in structures called seminiferous tubules

Front 2

Epididymis

Back 2

• Sperm maturation, since the sperm that emerge from the testes are immature and incapable of fertilization
• Sperm storage (6 weeks)
• The epididymis is a long, coiled tube that rests on the backside of each testicle.
• During sexual arousal, contractions force the sperm into the vas deferens.

Front 3

Vas Deferens

Back 3

• Tube where sperm exits urethra.
• Moves sperm from epididymis to seminal vesicle to cowpers gland
• The vas deferens is a long, muscular tube that travels from the epididymis into the pelvic cavity, to just behind the bladder.

Front 4

Seminal Vesicle

Back 4

• 60 % semen
• Viscous
• Alkaline
• The seminal vesicles are sac-like pouches that attach to the vas deferens near the base of the bladder.
• The seminal vesicles produce a sugar-rich fluid (fructose) that provides sperm with a source of energy to help them move.
• The fluid of the seminal vesicles makes up most of the volume of a man's ejaculatory fluid, or ejaculate.
• To provide secretion of: fructose sugar, ascorbic acid, a coagulating enzyme and other secretions

Front 5

Cowpers Gland

Back 5

• Clear mucus
• Neutralizes acidic urine
• Pea-sized structures located on the sides of the urethra just below the prostate gland.
• These glands produce a clear, slippery fluid that empties directly into the urethra. This fluid serves to lubricate the urethra and to neutralize any acidity that may be presentdue to residual drops of urine in the urethra.

Front 6

Prostate Gland

Back 6

• 33.3% semen
• Nutrients for sperm development
• The prostate gland is a walnut-sized structure that is located below the urinary bladder in front of the rectum.
• The prostate gland contributes additional fluid to the ejaculate. Prostate fluids also help to nourish the sperm.
• Contains citrate – a milky white nutrient source, other chemicals and prostate specific antigen (PSA)
• Plays a role in activating sperm

Front 7

Urethra

Back 7

• Connects to bladder, seminal vesicles and prostate
• Urination
• Release of sperm
• When the penis is erect during sex, the flow of urine is blocked from the urethra, allowing only semen to be ejaculated at orgasm.
• Runs through the centre of the prostate gland.

Front 8

Penis

Back 8

• Delivers sperm and urine
• Contains urethra and erectile tissue

Front 9

Lh

Back 9

• Promotes sperm maturation

Front 10

FSH

Back 10

• FSH from pituitary gland in the brain stimulates sperm production in the testes,