Why does your face turn blue when you hold your breath

Subject: Why does your face turn blue when you hold your breath

Date: Sun Nov 20 17:33:28 2005
Posted by Jackie
Grade level: 10-12 School: Upper Saint Clair High School
City: Pittsburgh State/Province: PA Country: United States
Area of science: General Biology
ID: 1132533208.Gb

Message:


Because i just wanted to know what happens.  Your lips turn blue when they are 
cold, and in science class we were talking about why your face turns blue and 
my teacher didn't know and i was just curious

Re: Why does your face turn blue when you hold your breath

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