People are sexual, that means that each a male and a feminine are wanted to breed. Every is supplied with particular organs able to producing particular cells wanted to procreate.
Together with a lady’s reproductive organs, sexual activity can result in the copy of human life.
For males, the exterior reproductive organs embody:
- Penis: This tubular, muscular organ fills with blood throughout arousal, thus making sexual activity doable.
- Scrotum: This pouch-like sac hangs beneath the penis and encases the testes, or testicles.
- Testicles: These two oval formed organs produce sperm cells and testosterone.
Whereas all males are born with all of their sexual organs, they don’t start to operate totally till puberty. The typical age of puberty for males is round 12. Throughout this time, hormonal modifications have an effect on a boy’s gonads and create lasting modifications which have usually been seen by means of historical past as “when a boy becomes a man.” This course of has many results, equivalent to progress in stature, muscular growth, and hair progress on the genitals and face.
When it comes to copy, puberty indicators the time when a person has fully-functioning sexual organs and is able to fathering an offspring.
The male testes produce spermatozoa (extra generally known as sperm), that are launched at sexual climax, or orgasm. This is called ejaculation. The sperm leaves the penis in a mix of secretions designed to nourish and transport the cells into the feminine reproductive system for procreation.
There are as much as 750 million sperm cells contained in a single ejaculation, but it surely solely takes one sperm cell to fertilize a lady’s egg.
The testes additionally produce the hormone testosterone, which is straight absorbed into the bloodstream. Together with regulating sperm manufacturing and sustaining sexual operate, testosterone additionally facilitates frequent options that bodily distinguish males from girls, equivalent to facial hair, a deeper voice, extra muscle mass, and broader shoulders; these are known as “secondary sex characteristics.”
As a person ages, sexual operate usually diminishes. Typical sexual abnormalities in males embody:
- Impotence (erectile dysfunction)
- Low sperm rely
- Lowered testosterone
- Untimely ejaculation