eMedicine: Hiccups (Health/Respiratory_Disorders)
emedicinehealth.com
Description: Consumer health resource center providing information on the causes, symptoms, and... treatment of hiccups.Hiccups are sudden, involuntary contractions of the diaphragm muscle. As the muscle contracts repeatedly, the opening between your vocal cords snaps shut to check the inflow of air and makes the hiccup sound
Specializes in: hiccups hiccup hiccoughs diaphragm spasms contractions muscle...

How Stuff Works: Lungs (Health/Respiratory_Disorders)
howstuffworks.com
Description: Illustrated description of how we breathe, plus information about various disorders....You breathe in and out anywhere from 15 to 25 times per minute without even thinking about it it just happens naturally. Learn all about your lungs, various conditions and diseases, and what makes the breath of life so crucial
Specializes in: lung lungs breathe breathing cough hiccup chest cavity trachea... bronchi diaphragm