Human Development from Conception to Birth
There are many reasons that certain drugs damage to an embryo very early in pregnancy even before the mother realizes she is pregnant. Firstly, some of the mother already exposed to certain drugs before she get pregnant such as tobacco and alcohol. For example, the women who take cigarettes everyday in their daily life will continue to smoke before they realize it. Due to this, the babies of mother who smoke tend to grow more slowly in the womb and are likely to be born prematurely and small (Habek et al., 2002). Apart from that, some of the women did not go to consult doctor when they were sick, and just simply take any medicine they have in the house. Especially antibiotics, analgesics, and asthma medications, these kinds of medicines are known as prescription as well as nonprescription drugs, however, may have effects on the embryo or fetus that the women never imagined. Furthermore, many women often consume caffeine by drinking coffee, tea, or colas or by eating chocolate as their daily habits. A review of studies on caffeine consumption during pregnancy concluded that a small increase in the risks for spontaneous abortion and low birth weight occurs for pregnant women consuming more than 150 milligrams of caffeine (approximately two cups of brewed coffee) (Fernandez & others, 1998). Therefore it is too late when the mother realizes they are pregnant, because the drugs already damage the embryo during the germinal period which takes place about 10 to 14 days after the conception.
Every human being begins life as a single cell, formed when father's sperm fertilizes mother's egg. Fertilization normally takes place in the mother's Fallopian tube, which connects the uterus (womb) with the ovary. The uterus is the size and shape of a large pear: it is made of muscle and it stretches to allow the baby's growth throughout the months of pregnancy. A woman ordinarily has two tubes and two ovaries, one at each side of her uterus. Every month one of the ovaries in
Every human being begins life as a single cell, formed when father's sperm fertilizes mother's egg. Fertilization normally takes place in the mother's Fallopian tube, which connects the uterus (womb) with the ovary. The uterus is the size and shape of a large pear: it is made of muscle and it stretches to allow the baby's growth throughout the months of pregnancy. A woman ordinarily has two tubes and two ovaries, one at each side of her uterus. Every month one of the ovaries in
References: Carol K. Sigelman & Elizabeth A. Rider (2006). Life-Spann Human Development. New Zealand: Victoria. John W. Santrock (2008). Life-Span Development. Americas: New York. About.com Emedicinehealth (2010). Slideshow: Fetal Development Month by Month. 5th July, 2010 retrieved from World Wide Web: http://www.emedicinehealth.com/slideshow_fetal_development/article_em.htm# Appendix