BiologyChapter 20: Human Reproduction

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BiologyChapter 0 Human Reproduction 1.The stages of the menstrual cycle are the egg developing inside the ovary then ovulation, and then menstruation..Eggs are produced one at a time by two ovaries in the woman's body while men produce hundreds of millions of sperm. Out of all the sperm produced only one will mature and fertilize the egg.


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.A female can become pregnant during her menstrual cycle when it is 4-48 hours after the egg is released from the oviduct.4.Semen is made of a series of sex glands' fluid and mixture of sperm.5.The advantage of so many sperms is that there will always be one that will make it all the way.6.Nutrients are at first given to the embryo from the wall of the uterus carried through the villi.7.The purpose of the placenta is to supply blood to the mother and to the embryo.8.Sex is determined through sperm. If the sperm cell is carrying a Y then the zygote is a male. If the egg were fertilized by an X-carrying sperm then the zygote would be XX and would be a female. Basically up to the male's sperm..In childbirth labor is involuntary contractions of the pregnant woman's uterus.10.During pregnancy the ultrasound is used to check on the development of a fetus.11.During infancy a child goes through many changes. He/she can sit unsupported, begins to have teeth, and begins to pull himself up to a standing position. He'll grab on objects and his brain doubles in mass during the first year after birth.1.At puberty the male increases his height, weight, muscles, and body hair. The larynx and vocal cords enlarge causing a deepening of the male's voice. In a female the menstrual cycle begins and the breast develop. The height, body hair, and the fat deposits on the legs and hips increase. In both male and female, the sweat and oil glands in the skin become more active.1.The characteristics of a mature adult in a woman different, she stops reproducing when menopause begins and a male is the same he will produce sperm throughout his life.14.The environment a child is in can affect them in the way that if a child is raised in a violent environment then the child will be corrupted as an adolescent. If he's raised in a nice loving home then he may be a well and loving relative.15.A newborn child and a newborn animal are similar in many ways. They are both innocent little creatures entering a new world. They are clueless and have not entered a world that they will begin to explore. Please note that this sample paper on BiologyChapter 20: Human Reproduction is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on BiologyChapter 20: Human Reproduction, we are here to assist you. Your cheap research papers on BiologyChapter 20: Human Reproduction will be written from scratch, so you do not have to worry about its originality.


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