Table of contents:
- What is the anatomy of the penis?
- How is the process of ejaculating semen during orgasm?
- The "shooting distance" of semen can go up to one meter
With all the attention paid to the area down there, not all men really understand the anatomy of their own genitals. In fact, familiarizing yourself with one's own limbs is important. The reason is, as soon as one day you suspect something strange that suddenly appears, such as a bump or a reddish rash, you will have an initial picture of your body's normal standards.
Find out all the detailed information on penile anatomy here.
What is the anatomy of the penis?
Side view of the penis anatomy (source: Teach Me Anatomy)
The penis is the male sex organ that reaches its full size during puberty. In general, this sex organ consists of three main parts, the base or root (radix), trunk (corpus), and head (glans). As the name suggests, radix is the very top.
In addition, the color of your penis can be different from the skin tone of the rest of your body. This is because the pigment (a natural substance that dyes the skin) in the pubic skin is richer than in the skin of the rest of the body. That is why it is possible that the male genitals are generally one or two tones darker than the skin of the stomach.
How is the process of ejaculating semen during orgasm?
To achieve ejaculation, men need a stimulation by seeing or feeling something that arouses sexual arousal. This signal prompts the brain to send nerve messages through the spinal cord to the genitals, then causes the corpora cavernosa to relax to allow more blood to flow in and fill the empty space inside.
This heavy flow of blood then creates pressure, so that the male genitals swell and harden. This enlargement and hardening of the male genitalia is known as an erection. When a man has an erection, scrotum (testicles) are drawn into the body to prepare the sweet water and the muscles of the whole body tighten.
However, before the semen is sprayed, the mature sperm must first be transported out of the “warehouse”, that is epididymis, via the conveying hose vas deferens to be collected at the end of the urethral tract at the head of the genital organs.
During the journey, this fresh sperm batch passed several important posts, such as seminal vesiculas and prostate each of which secretes a special fluid to thin sperm and create the milky-white sticky liquid we know as semen.
The semen collects at the back of the head of the genital organs, precisely at the end of the corpus spongiosum. When semen fills the urethra, the pressure from muscle contractions continues to force more fluid forward. At this time, the bladder automatically seals the urine openings to prevent the back flow of semen into the body. This bladder closure reaction is also the reason why urine does not come out with the semen when a man has an orgasm.
Meanwhile the entry and exit paths are tightly sealed, so the semen that continues to enter eventually causes the urethra to swell to twice its original diameter. This indicates that semen is ready to be released. This whole process is called emission aka ejaculation, which should take at least three seconds.
The "shooting distance" of semen can go up to one meter
Still remember with the two tightening muscles, ischiocavernosus and bulbospongiosus? Together, these two muscles create a pumping force after receiving a signal from the nerves at the base of the spine to squirt semen out of the body at an incredible speed.
Even more surprising, often the first semen spray when a man manages to ejaculate is so strong that it can dart up to a meter or two in the air.
After finishing the first ejaculation, the muscles of the male sex organs will continue to twitch and contract to follow up the ejaculation response for three or four times until it finally stops completely.
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