What is the Penis?
- The penis is the male sexual organ. It consists of:
- Two cylindrical chambers (swelling), which are called the corpora cavernosa. They run lengthwise, on both sides, through the penis. They consist of a network of blood vessels and cavities.
- At the end of the glans penis. This is the third erectile.
- The urethra, the canal through which urine and sperm flow. He walks along by the swelling and the glans.
- The foreskin, a fold of skin that can slide backwards and thus explains the glans Fri.
- urinary bladder
- pubis
- penis
- erectile
- acorn
- foreskin
- urethra
- colon
- rectum
- seed bladder
- vas deferens
- prostate
- Cowper gland
- anus
- vas deferens
- epididymis
- testicle
- scrotum
How does erection occur?
An erection begins in the brains. Physical or mental stimulation causes some nerves in the brains send chemical signals to the nerves in the penis. These signals allow the blood vessels in the penis to relax knowing that they allowing blood to flow into the erectile bodies. The result is a swollen and hard penis. Once enough blood into the penis, is efflux blocked by engaging the muscles around the blood vessels of the erectile. The erection goes away as the blood flow is stopped and the draining veins again provide free passage.
How does ejaculation occur?
Ejaculation (ejaculation) occurs when the man is up excitedly. Sexual stimulation causes the nerves in the penis signals to the brains that in turn signals return. This will be more and more signals that will eventually ejaculation takes place. Ejaculation has 2 phases. In the first phase of the vas deferens together to pull the seed toward the prostate and urethra to push. The prostate fluid is added causing sperm occurs. In the second phase, the muscles at the base of the penis together every 0.8 seconds. This makes the semen through the penis resulted in about 5 contractions.
