Why our lips are red in colour

2011-07-13 8:21 am
Why our lips are red in colour?
更新1:

One more question, Why is the trunk of a tree round ?

回答 (4)

2011-07-25 8:12 pm
✔ 最佳答案
Q. Why is a trunk of a tree round?

A. When tree grows, it grows vertically. It grows horzontally in all directions almost evenly. The result is a round trunk.

Hope I can help you!!!!!!!!!>_<
2011-07-27 7:10 pm
The skin that makes up your lips isn't actually red. There are three layers of nearly translucent skin that form your lips. Beneath them is the mucous membrane layer that contains capillaries close to the skin's surface. The blood in these capilla...
2011-07-14 6:45 am
The skin that makes up your lips isn't actually red. There are three layers of nearly translucent skin that form your lips. Beneath them is the mucous membrane layer that contains capillaries close to the skin's surface. The blood in these capillaries makes your lips appear red.


please chose me!(+﹏+)~狂晕
2011-07-13 8:16 pm
The skin that makes up your lips isn't actually red. There are three layers of nearly translucent skin that form your lips. Beneath them is the mucous membrane layer that contains capillaries close to the skin's surface. The blood in these capillaries makes your lips appear red.


收錄日期: 2021-04-26 13:13:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110713000051KK00029

檢視 Wayback Machine 備份