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Understanding of Human Embryo Development for Teratogen Counselling

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KMID : 0892720160200020112
ÀüÀÌ°æ ( Chun Yi-Kyeong ) - ´Ü±¹´ëÇб³ ÀÇ°ú´ëÇÐ Á¦ÀϺ´¿ø º´¸®°ú

ÀÌÈñö ( Lee Hee-Chul ) - ´Ü±¹´ëÇб³ ÀÇ°ú´ëÇÐ Á¦ÀϺ´¿ø ¼Ò¾Æû¼Ò³â°ú

Abstract

¹ß»ý ù ÁÖ¿¡´Â ¼öÁ¤¶õÀÌ ºÐÇÒÀ» °ÅµìÇÏ¿© ÁÖ¸Ó´Ï ¹è »óÅ·ÎÀڱ󻸷¿¡Âø»óÇϸç, ¹ß»ý 2ÁÖ¿¡´Â ÀåÂ÷ ¹è¾Æ°¡ µÇ´Â ³³ÀÛÇÑ ¿ø¹Ý¸ð¾çÀÇ 2°ã ¹è¹ÝÀÌ ¸¸µé¾îÁø´Ù.
¹è¾Æ±â´Â ¹ß»ý 3ÁÖ¿¡¼­ ¹ß»ý 8ÁÖ±îÁöÀ̸ç, ÀÎüÀÇ ÁÖ¿ä ±â°üÀÌ Çü¼ºµÇ´Â Áß¿äÇÑ ½Ã±âÀÌÀÚ ÁßÃ߽Űæ°è¸¦ ¼±µÎ·Î ½ÉÀå, ±Í, ´«, »çÁö, Ä¡¾Æ, ±¸°³, ¿ÜºÎ»ý½Ä±â µî ÁÖ¿äÇÑ ±âÇüÀÌ ¹ß»ýÇÏ´Â ½Ã±âÀ̱⵵ ÇÏ´Ù.
âÀÚ¹è Çü¼ºÀº ¹ß»ý 3ÁÖ ÃÊ¿¡ ½ÃÀÛÇÏ¿© 4ÁÖ ¸»±îÁö °è¼ÓµÇ¸ç ¹è¾Æµ¢ÀÌ À§ÆÇ ¼¼Æ÷¿¡¼­ Àå±âÇü¼º¿¡ °ü¿©ÇÏ´Â ¿Ü¹è¿±, Á߹迱, ³»¹è¿±ÀǼ¼Á¾ÀÚÃþÀÌ»ý±ä´Ù. ±âÇüÀ¯¹ß ÀÎÀÚ¿¡ ¹Î°¨ÇÑ ½Ã±âÀÌÁö¸¸ Àӽźΰ¡ ÀÓ½ÅÇÑ °ÍÀ» ¸ð¸£°í ÁÖÀǸ¦ ¼ÒȦÈ÷ Çϱ⠽±´Ù.
¹ß»ý 3ÁÖ ¸»¿¡ ½Å°æÆÇÀÇ ¾çÂÊ ½Å°æÁÖ¸§ÀÌ °¡¿îµ¥¿¡¼­ ¸¸³ª ÇÕÃÄÁ® ½Å°æ°üÀÌ ¸¸µé¾îÁö¸ç ½Å°æ°üÀº ÀåÂ÷ ³ú¿Í ô¼ö°¡µÈ´Ù. ¹ß»ý 25ÀÏ°ú 28ÀÏ°æ¿¡ ¸Ó¸®ÂÊ°ú ²¿¸®ÂÊ ½Å°æ±¸¸ÛÀÌ ¸·Çô¼­ Æó¼âµÈ °ü ¸ð¾çÀÌ µÇ¸ç Á¦´ë·Î ´ÝÈ÷Áö ¾ÊÀ¸¸é ½Å°æ°ü °á¼ÕÀ» ÃÊ·¡ÇÑ´Ù.
½Å°æ´É¼±¼¼Æ÷´Â ¾çÂÊ ½Å°æÁÖ¸§ÀÇ ²À´ë±â¿¡ À§Ä¡ÇÑ ½Å°æ¿Ü¹è¿±¿¡¼­ À¯·¡ÇÑ ¼¼Æ÷ÀÌ¸ç ´Ù¾çÇÑ Á¶Á÷°ú ±â°üÀ» ¸¸µç´Ù. ½Å°æ°üÀ» ¶°³ª ÀÌÁÖÇÑ ½Å°æ´É¼±¼¼Æ÷´Â ¿©·¯ ±âÇüÀ¯¹ß¹°Áú¿¡ ¼Õ»ó ¹Þ±â ½±´Ù. ¾ó±¼°ú ½ÉÀå¼Ó¸·¹æ¼® ¹ß»ý¿¡ °ü¿©ÇϹǷΠ¼Õ»óµÇ´Â °æ¿ì ¾ó±¼°ú ½ÉÀå±âÇüÀÇ µ¿¹ÝÀÌ µå¹°Áö ¾Ê´Ù.

Human embryology is the study of development from a single cell to a baby in 9 months. Implantation occurs at the end of the first week of development. The second week of development is known as the week of 2¡¯s. Gastrulation, the most characteristic event occurring in the third week, establishes three germ layers composed of ectoderm, mesoderm, and endoderm. The three germ layers and neural crest cells lead to the development of their own tissues and organs during the embryonic period, which extends from the third to the eighth week. Major congenital malformations occur in the embryonic period. The fetal period, from the third month to the day of birth, is the time for maturation of tissues and organs, and growth of the body. Because of the close relationship between embryology and congenital abnormalities, knowledge of human development is essential to assess the effects on the embryo when the mother has been exposed to teratogens. This paper briefly reviews the normal embryonic development and associated congenital malformation.
KeyWords

embryology, neural crest, congenital abnormalities, gastrulation, neurulation
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