Prenatal Development

Prenatal Development Essay By Heidi Marrotti Prenatal intimacy is the treat when a human foetus or fertilized egg gestates during pregnancy, from fertilization to birth. There argon several criterions that are toughened in the prenatal development process the number ane is the fertilization, step in which semen is deposited into the vagina, with the cervix of the body and into the fallopian negatron tube The close thing to happen is the embryonic period, during this measure the embryo will spend the next few eld locomotion by the fallopian tubes this stage of development is also cognise as the blastocyst stage. Up to this point there is no gain in the overall size of the embryo. The next ternion to cardinal weeks, a primitive brain and spinal heap appear. middle muscles, ribs backbone, digestive tract receive to develop. The embryo is roughly, a fractional inch to an inch grand, and weighs about one seventh of an ounce. The next nine to twelve weeks t he embryo now becomes cognise as a foetus. There is a rapid adjoin in size. Nervous system, organs and muscles become organized and connected, and the foetus potty now kick, suck, open his or her mouth and a rumor of breathing appears. Also the external genitals are intimately formed and the fetuss sex is evident.

The fetus is approximately three inches long and weighs about less than ounce. on the whole of this development happens during what is know as the first trimester. The second trimester which involves weeks bakers dozen through cardinal four, the fetus now is approximately twelve inches long and weighs about o ne. Point eight pounds. During this time the! fetus increases in size rapidly, the mother can also begin to step the fetus move. Most of the brain neurons have positive during the first twenty dollar bill four weeks, the eyes are in the altogether to visible light and the fetus reacts to sound. The final weeks which are weeks twenty five through thirty eight are known as the triad trimester. The fetus is now approximately twenty inches long and weighs some seven and half...If you want to get a full essay, rewrite it on our website: OrderCustomPaper.com

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