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
ampulla-the dilated portion of a canal or duct especially of the semicircular canals of the ear. lachrymal duct, lacrimal duct, tear duct-any of several small ducts that carry tears from the lacrimal glands. nasolacrimal duct-a duct that carries tears from the lacrimal sac to the nasal cavity.