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
1. The process of secreting a substance, especially one that is not a waste, from the blood or cells: secretion of hormones; secretion of milk by the mammary glands.2. A substance, such as saliva, mucus, tears, bile, or a hormone, that is secreted.achrymal secretion, lacrimal secretion-saline fluid secreted by lacrimal glands; lubricates the surface of the eyeball. perspiration, sudor, sweat-salty fluid secreted by sweat glands; sweat poured off his brow.