We think our bodies shut down for the night when we fall asleep. But sometimes theyâre still going â kicking, gasping, even making us wet the bed. These abnormal behaviors are called parasomnias, disorders involving involuntary physical activity that happens during sleep.
lacrimal apparatus a group of organs concerned with the production and drainage of tears; it is a protective device that helps keep the eye moist and free of dust and other
an infection of the lacrimal sac caused by obstruction of the nasolacrimal duct. It can be chronic or acute and is congenital in some cases. It is characterized by tearing and discharge from the eye. In the acute phase the sac becomes inflamed and painful.