Reproduction is the process by which organisms make more organisms like themselves. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not essential to keeping an individual alive. In the human reproductive process, two kinds of sex cells, or gametes GAH-meetz , are involved. The male gamete, or sperm, and the female gamete, the egg or ovum, meet in the female's reproductive system. When sperm fertilizes meets an egg, this fertilized egg is called a zygote pronounced: ZYE-goat. The zygote goes through a process of becoming an embryo and developing into a fetus. The male reproductive system and the female reproductive system both are needed for reproduction. Humans, like other organisms, pass some characteristics of themselves to the next generation. We do this through our genes , the special carriers of human traits. The genes that parents pass along are what make their children similar to others in their family, but also what make each child unique.


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What is vaginitis in teens?
On top of being factually wrong, many of these myths are downright sexist. No penis, toy, hand, or even baby will stretch your vagina permanently, says sex therapist Vanessa Marin. It's hard to give a partner feedback if all you know how to do is hit the power button.
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Vaginitis is any inflammation or infection of the vagina. It's a common problem in girls and women of all ages. It develops when the walls of the vagina become inflamed because of an infection or irritant. Bacteria, yeast, viruses, and chemicals can cause vaginitis. The most common types are:. Yeast infection. This is caused by one of the many species of fungus known as candida. These normally live in the vagina in small numbers.
She dressed us exactly the same, usually in homemade striped get-ups that resembled old-school prison uniforms. My mother sighed. She had gotten this question before. My grandfather quickly put an end to my research before summoning my mother to give me a little talk.