Obstructive sleep apnea is a common and serious sleep disorder which causes the cessation of breathing during sleep. The airway repeatedly becomes blocked, limiting the amount of air that reaches the lungs. When this happens, snoring or choking may result as it becomes more difficult to breathe. The brain and body become oxygen deprived and you may wake up. This can happen a few times a night, or in more severe cases, several hundred times a night.
Normal breathing open airway, tongue relaxed (fallling slightly back)
Snoring partially blocked airway. When the constricted airway causes vibration
OBSTRUCTIVE SLEEP APNEA
Fully blocked airway