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面頸部的淋巴系統有哪些特點?

Posted By vickong pun     July 5, 2021    

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面頸部的淋巴系統有哪些特點?

  面頸部的淋巴系統有哪些特點?毛細淋巴管集合成較大的淋巴管,淋巴管再合成幾條大的淋巴幹,最後合成2條淋巴導管,開口於靜脈。
因此,淋巴是協助體液回流的管道系統,可以把它看成是靜脈的補充管道。

不過淋巴系統在機能上亦有不同於靜脈之處,如在消化道中靜脈吸收碳水化合物分解後的產物,而淋巴管則吸收脂肪及分子顆粒大的蛋白質。
面頸部的淋巴極為豐富,系由多數小淋巴管所組成。

在淋巴管通向靜脈的過程中,尚有淋巴結分別收納來自口腔、頜面部不同區域的淋巴液,構成口腔頜面部的重要防禦系統。
淋巴結的硬度在正常情況下與軟組織相似,不易觸及,急性炎症時所觸及的淋巴結有明顯的壓痛。

因此,淋巴結對炎症和腫瘤的診斷、轉移、治療及預後均有重要的臨床意義。

                    

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