Loratadine is an antihistamine that is sold under the brand name of Claritin. This medication is used to treat hay fever and allergy symptoms such as sneezing, runny nose, itching and watery eyes.
Epiglottis. The epiglottis is a flap of soft cartilage, covered by a mucous membrane. It is attached to the back of the tongue and acts as a valve during swallowing to prevent food and liquid from entering the lungs. This valve closes when we swallow food, liquid, even saliva, without us having to think about doing so.In other words, it is an unconscious action.t is attached to the back of the tongue and acts as a valve during swallowing to prevent food and liquid from entering the lungs. This valve closes when we swallow food, liquid, even saliva, without us having to think about doing so.
The esophagus is normally protected from these acids by a one-way valve mechanism at its junction with the stomach called the lower esophageal sphincter (LES). The LES allows the food chunks (bolus) to pass into the stomach but prevents food, drink, stomach acid and digestive enzymes (chyme) from flowing back up into the esophagus. The LES is aided in this task by the diaphragm. An incompetent LES fails to prevent back flow from occurring. An LES may be incompetent because it: