Yawn - Wikipedia, the free encyclopedia
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A yawn (from the Middle English yanen , an alteration of yonen or yenen , which in turn comes from the Old English geonian ), is a reflex of simultaneous inhalation of air and stretching of ...
en.wikipedia.org/wiki/Yawn
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If you yawn in class, you'll probably notice a few other people will start yawning, too. Why is that? ... Everybody yawns — from unborn babies to the oldest great-grandparent. Animals do it, too. But why, exactly, do people and animals yawn? No one knows for sure. But there are many theories (ideas) about why people yawn.
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kidshealth.org/kid/talk/qa/yawn.html
kidshealth.org/kid/talk/qa/yawn.html
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I think that it may be possible that brain lesions, tumors and certain kinds of epilepsy cause an increase in the cerebrospinal fluid pressure by obstructing csf pathways so there is a need to yawn more often.
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www.members.shaw.ca/hilaryking/Oldbrain1.htm
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What causes a hiccup and/or yawn? Find out here what causes them. ... Why do we hiccup? Why do we yawn? Both of these involuntary responses have baffled the average person for decades. What are their causes and their functions, exactly? Can we stop ourselves from hiccuping or yawning? ... Hiccups don't cause any medical concern,
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www.essortment.com/all/hiccupyawncaus_rqxr.htm
www.essortment.com/all/hiccupyawncaus_rqxr.htm
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Breathing 100% oxygen (Gas #1) or either carbon dioxide gas (Gas #2 and #3) did cause the students to breathe at a faster rate. However, neither carbon dixoide gas nor 100% oxygen caused the students to yawn more.
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faculty.washington.edu/chudler/yawning.html
faculty.washington.edu/chudler/yawning.html
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We don't really know, but here are some theories: * The Physiological Theory -- Our bodies induce yawning to drawn in more oxygen or remove a build-up of carbon dioxide. This theory helps explain why we yawn in groups. Larger groups produce...
http://www.answerbag.com/q_view/11103
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And one of the physical effects will be an increase in yawning...and it's almost certain to do so, according to experts. Transition times seem to cause us to yawn - gearing up or ratcheting down the body, gearing up for or coming down from physical effort as well as ratcheting down from emotional events.
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www.uc.edu/news/ebriefs/yawn.htm
www.uc.edu/news/ebriefs/yawn.htm
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List of 20 disease causes of Yawning Excessively, patient stories, diagnostic guides, medical books excerpts online about Yawning Excessively. Diagnostic checklist, medical tests, doctor questions, and related signs or symptoms for Yawning Excessively. ... Pituitary conditions often undiagnosed cause of symptoms:
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www.wrongdiagnosis.com/sym/yawning_excessively.htm
www.wrongdiagnosis.com/sym/yawning_excessively.htm
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Ask a Scientist or Engineer ... National Science Foundation; 4201 Wilson Blvd. Arlington, VA 22230; 703-292-5111; FIRS: 800-877-8339 ; TDD: 800-281-8749 ... NSTW was succeeded by Find Out Why, a year-long outreach effort offering everyday science activities for families to do together. More recently, NSF participated in the...
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www.nsf.gov/od/lpa/nstw/start.htm
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