สะดือคืออะไร

posted on 04 Apr 2008 22:16 by linjah in General

อ้าวเราก็มีสะดือกันทุกคนนะ แต่จะมีใครทราบที่มาของสะดือบ้างเอ่ย สะดือเคยมีความสำคัญกับเรามาก หากไม่มีมันเราก็ไม่สามารถมีชีวิตรอดอยู่ได้ทุกวันนี้ จริง ๆ แล้วสะดือเคยเป็นท่อพิเศษเชื่อมโยงทารกในครรภ์กับคุณแม่ ท่อพิเศษนี้ประกอบด้วยเส้นเลือด เพื่อให้เลือดของคุณแม่นำออกซิเจนและอาหารมาเลี้ยงทารกให้เจริญเติบโตและมีชีวิตขณะที่ทารกยังอยู่ในครรภ์ หลังจากที่ทารกคลอดออกมาแล้ว ทารกก็ไม่ต้องการเลือดของคุณแม่ที่ส่งผ่านทางท่อพิเศษนี้แล้ว ดังนั้นคุณหมอจึงตัดสายสะดือออก ซึ่งสะดือนะปัจจุบันก็คือ แผลเป็นที่เกิดจากการตัดสายสะดือนั่นเอง

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