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The human body in health and illness
Glands Penis
Urethra
Penis
Prostate Gland
Vas Deferens
Bladder
Seminal Vesicle
Ureter
[Type a quote from the document or the summary of an interesting point.
Scrotum
Testes
Anus
Colon
Glands Penis
Urethra
Penis
Prostate Gland
Vas Deferens
Bladder
Seminal Vesicle
Ureter
Forskin
Scrotum
Testes
Anus
Colon
The most important part of the male reproductive system are the Testicles (Gonads)
Sperm• Production• Nourishment • Transportation
The testes evolve from prenatal sex cells called Gonads
The Gonads begin their development within the abdominal cavity and usually descend into the scrotum during the last 2 months of fetal development.
Failure to descend is called cryptorchidism • A condition that could
result in sterility
The two major functions of the testes• Production of Sperm• Secretion of
Testosterone
Testes located outside the body and are suspended in a sac called the scrotum
THE SCROTUM is pouch like structure that houses the testes and regulates temperature.
This is done in two ways:
1) Sweating 2) Cremasteric
Muscle
Sperm cannot live at body temperature (98.6)
Sperm prefers the temperature of the scrotum (93.2)
Cold environment: the scrotum with the assistance of the cremasteric muscle contracts the testes closer to the body maintaining 93.2 degrees
Warm environment: Cremasteric muscle relaxes allowing the testes farther from the body maintaining 93.2 degrees
Tight underwear or jeans can elevate the temperature of the testes thereby lowering the sperm count
The testes are seperated and divided into Lobules
Lobules are made up of:• Seminiferous Tubules• Epididymis.
Seminiferous tubules, which is where the actual production of sperm takes place.
After spermatogenesis the sperm pass into the epididymis for collection and storage
While in the epididymis the sperm become fertile and develop the ability to move
The walls of the epididymis contract forcing sperm into the vas deferens
A continuation of the epididymis which travels through the abdominal cavity and connects with the duct of the seminal vesicle
Vasectomy• A cutting of the Vas
Deferens causing infertility
Extends from the base of the bladder to the tip of the penis
Carries urine from the bladder to the outside
Carries semen from Seminal Vesicle to the outside
During sexual arousal the gland produces a clear, viscous secretion known as pre-ejaculate.
This fluid helps to lubricate the urethra for sperm to pass through.
It also neutralizing traces of acidic urine in the urethra,and helps flush out any residual urine or foreign matter.
Located at the base of the bladder Secretes a thick yellowish material
rich in sugar and vitamin C to activate and nourish the sperm
The penis is the male sex organ for intercourse and also serves as a urine draining organ.
The reproductive system is controlled by the pituitary gland (Master Gland)
In the male, the pituitary gland secretes two main hormones: • FSH: FOLLICLE
STIMULATING HORMONE
• ICSH:INTERSTITIAL CELL STIMULATING HORMONE
Stimulates the testes to produce sperm cells
Stimulates testes to produce the primary sex hormone, testosterone
Testosterone is the male primary sex hormone.
It is responsible for the male secondary sexual characteristics• Voice Change• Masculine Features• Muscle Development• Hair Growth• Attracted to the
opposite sex
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