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2007-01-10 03:25:24 · 12 answers · asked by Anonymous in Pregnancy & Parenting Grade-Schooler

12 answers

When they go through puberty and start producing sperm. As in girls, its different for each one. They start to grow hair in the armpit and pubic region, their voices start to deepen, somewhere around middle school age.

2007-01-10 03:30:16 · answer #1 · answered by smartypants909 7 · 0 0

Here: I think people should already know this but here:
What Does the Male Reproductive System Do?
The male sex organs work together to produce and release semen into the reproductive system of the female during sexual intercourse. The male reproductive system also produces sex hormones, which help a boy develop into a sexually mature man during puberty.

When a baby boy is born, he has all the parts of his reproductive system in place, but it isn't until puberty that he is able to reproduce. When puberty begins, usually between the ages of 10 and 14, the pituitary gland - which is located in the brain - secretes hormones that stimulate the testicles to produce testosterone. The production of testosterone brings about many physical changes. Although the timing of these changes is different for every guy, the stages of puberty generally follow a set sequence.

During the first stage of male puberty, the scrotum and testes grow larger.
Next, the penis becomes longer, and the seminal vesicles and prostate gland grow.
Hair begins to appear in the pubic area and later it grows on the face and underarms. During this time, a male's voice also deepens.
People also undergo a growth spurt during puberty as they reach their adult height and weight.
Once a male has reached puberty, he will produce millions of sperm cells every day. Each sperm is extremely small: only 1/600 of an inch (0.05 millimeters long). Sperm develop in the testicles within a system of tiny tubes called the seminiferous tubules. At birth, these tubules contain simple round cells, but during puberty, testosterone and other hormones cause these cells to transform into sperm cells. The cells divide and change until they have a head and short tail, like tadpoles. The head contains genetic material (genes). The sperm use their tails to push themselves into the epididymis, where they complete their development. It takes sperm about 4 to 6 weeks to travel through the epididymis.

The sperm then move to the vas deferens, or sperm duct. The seminal vesicles and prostate gland produce a whitish fluid called seminal fluid, which mixes with sperm to form semen when a male is sexually stimulated. The penis, which usually hangs limp, becomes hard when a male is sexually excited. Tissues in the penis fill with blood and it becomes stiff and erect (an erection). The rigidity of the erect penis makes it easier to insert into the female's vagina during sexual intercourse. When the erect penis is stimulated, muscles around the reproductive organs contract and force the semen through the duct system and urethra. Semen is pushed out of the male's body through his urethra - this process is called ejaculation. Each time a man ejaculates, it can contain up to 500 million sperm.

When the man ejaculates during intercourse, semen is deposited into the woman's vagina. From the vagina the sperm make their way up through the cervix and move through the uterus with help from uterine contractions. If a mature egg is in one of the woman's fallopian tubes, a single sperm may penetrate it, and fertilization, or conception, occurs.

This fertilized egg is now called a zygote and contains 46 chromosomes - half from the egg and half from the sperm. The genetic material from the male and female has combined so that a new individual can be created. The zygote divides again and again as it grows in the woman's uterus, maturing over the course of the pregnancy into an embryo, a fetus, and finally a newborn baby.

2007-01-10 12:10:19 · answer #2 · answered by musicpanther67 5 · 1 0

13

2007-01-10 14:09:16 · answer #3 · answered by robedzombiesoul 4 · 0 0

First of all young men should wait till they finshed school,get a college degree before thinking about kids it's a long time for that.I watch alot of talk-shows specially Maury about teens having babbies,and everytime the young boys claims and said they're not the father,cause the child don't look like me,or some other lame excuse.It's best to wait it's the right thing to do.

2007-01-10 12:14:24 · answer #4 · answered by Anonymous · 0 0

if your talking about being able to get a girl pregnant then the age is between 11 and 12. that's when most boys hormones kick in.

2007-01-10 11:30:22 · answer #5 · answered by george 2 6 · 0 0

when they go through puberty but why are you asking a question like that. how old are you most guys dont want children before 20

2007-01-10 11:30:23 · answer #6 · answered by miraclebaby_2006 5 · 0 0

Pretty young I have a friend who had sex when he was 11 and got the girl pregnant.

2007-01-10 13:37:49 · answer #7 · answered by Amberlyn4 3 · 0 0

i don't really under stand your question.but i think you mean are old does a boy put in a girl pregnant its about 12 or 15 years old until well............go see your doctor please. xo

2007-01-10 11:43:29 · answer #8 · answered by cilia 3 · 0 0

mentally it depends. physically well its the woman. no seriously when they start producing sperm.

2007-01-10 11:30:23 · answer #9 · answered by other shoes 2 · 0 0

I think that's something you should discuss with your parents.

2007-01-10 11:30:38 · answer #10 · answered by msrdbone 2 · 1 0

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