You should be worried about getting pregnant if you are having sex so that sperm is in contact with your vagina and you are not using birth control. You can get pregnant even when you are on your period or any time you have vaginal bleeding. For example, a woman can have vaginal bleeding when she is ovulating. Females have eggs, males have sperm: Females have two small, grape-shaped ovaries inside their belly on either side of the uterus. You are born with ovaries and they are filled with hundreds of thousands of eggs. When you reach puberty, your ovaries make estrogen.
Sperm Can Swim Far in the Female Body
How Could Sperm Survive Those Conditions?
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 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.
MORE ON THIS TOPIC
Your daughter is asking about getting her first bra, and your son comes home from soccer practice smelling like he's been digging on a road crew all day. What's going on? Puberty was awkward enough when you were the one going through it. So how can you help your child through all the changes? Sure, most of us know the telltale signs of puberty — hair growth in new places, menstruation, body odor, lower voice in boys, breast growth in girls, etc. But we may not fully comprehend the science behind all of these changes. Here's a quick look at how it works. Usually after a girl's 8th birthday or after a boy turns 9 or 10, puberty begins when an area of the brain called the hypothalamus starts to release gonadotropin-releasing hormone GnRH. When GnRH travels to the pituitary gland a small gland under the brain that produces hormones that control other glands throughout the body , it releases two more puberty hormones — luteinizing hormone LH and follicle-stimulating hormone FSH.
In , a year-old girl living in the small southern African nation of Lesotho came to local doctors with all the symptoms of a woman in labor. But the doctors were quickly puzzled because, upon examination, she didn't have a vagina. Even the year-old girl could not believe she was pregnant. Yet by looking at her records the hospital staff realized the young woman was in the hospital days earlier with a knife wound to her stomach. The average pregnancy lasts days. After interviews, they gathered that "Just before she was stabbed in the abdomen she had practiced fellatio with her new boyfriend and was caught in the act by her former lover. The fight with knives ensued.
