The Sperm and the Egg

The Sperm and the Egg - THE SPERM AND THE EGG 1 The Sperm...

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THE SPERM AND THE EGG 1 The Sperm and the Egg Nicole Ureste PSY/265 December 19, 2010 Carol Watson
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THE SPERM AND THE EGG 2 The Egg When a female is born she already has all of the ova (egg cells) that she will ever have. She starts off with around two million ova but they are still immature. By the time she reaches puberty, about 400,000 of the ova will have survived. All of the ova are contained inside of the ovary in a thin capsule or follicle. During the years of reproduction, about 400 of the ova that are now ripened will be released by their follicle, The ovaries are where the ova are produced. The ovaries also produce the female sex hormones; progesterone and estrogen. Estrogen, also known as estradiol, estriol, and estrone promote the changes of puberty and help to regulate the menstrual cycle. Progesterone also helps regulate the menstrual cycle but also prepares the uterus for Once the egg is released from the ovaries, it passes through the fallopian tubes
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This note was uploaded on 05/16/2011 for the course PSY 265 taught by Professor Sallyhenzel during the Spring '09 term at University of Phoenix.

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The Sperm and the Egg - THE SPERM AND THE EGG 1 The Sperm...

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