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.
By closing at this time, the mitral valve prevents the oxygenated blood in the left ventricle from flowing back to the lungs. The left ventricle is the pumping chamber of the left side of the heart and is the most muscular portion of the heart.y closing at this time, the mitral valve prevents the oxygenated blood in the left ventricle from flowing back to the lungs. The left ventricle is the pumping chamber of the left side of the heart and is the most muscular portion of the heart.