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臍帶

出自維基百科,自由嘅百科全書
喺子宮入面嘅胎,紅藍色嗰條帶就係臍帶

臍帶粵拼:ci4 daai3,學名Funiculus umbilicalis)係幾乎所有哺乳類動物(包括)嘅母體入面,連住個同有娠紀媽咪胎盤嘅一樣嘢[1]。佢分咗做臍動脈同埋臍靜脈,臍動脈有兩條,負責將啲唔要嘅嘢(例如尿素二氧化碳)由個胎傳去畀媽咪到;而臍靜脈第一條,負責將啲有用嘅嘢(例如氧氣)由個媽咪傳去畀個胎。當個生出嚟之後,臍帶經已冇乜作用,畀醫生剪斷同埋結紮之後,留低嗰笪𤶸就係肚臍

[編輯]
  1. "The Umbilical Cord". yale.edu. 原先內容歸檔喺28 March 2013. 喺27 March 2018搵到.
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