Swallowing problems can be a serious health risk

[ahlam1399]

http://static-global-s-msn-com.akamaized.net/img-resizer/tenant/amp/entityid/BBJTBZ0.img?h=100&w=100&m=6&q=60&o=f&l=f&x=533&y=330Behind your tongue, just a few inches down the back of your throat, lies a dangerous precipice: over one edge it?s a straight shot down your trachea and bronchi and into the lungs, and over the other edge is the esophagus, leading to the acid-filled stomach.If you or anyone you know has ever had difficulty swallowing, this anatomy is where the trouble begins. An estimated 9 million Americans...

أكثر... (http://www.msn.com/en-ca/health/medical/swallowing-problems-can-be-a-serious-health-risk/ar-BBJTLjx?li=AAggV0S&srcref=rss)