Pulmonary embolism is the sudden blockage of a major blood vessel (artery) in the lung, usually by a blood clot . In most cases, the clots are small and are not deadly, but they can damage the lung. But if the clot is large and stops blood flow to the lung, it can be deadly.
The term chiaroscuro (from the Italian words chiaro, meaning light, and scuro, meaning dark) refers to the use of light and shade in a work of art to define three-dimensional objects. Masters of this technique were the Italians Leonardo da Vinci and Caravaggio and the Dutch painter Rembrandt.
Chiropractic is a form of alternative medicine that focuses on diagnosis and treatment of mechanical disorders of the musculoskeletal system, especially the spine, under the belief that these disorders affect general health via the nervous system.hiropractic is a form of alternative medicine which focuses on manipulation of the musculoskeletal system, especially the spine. Its founder, D.D. Palmer, called it a science of healing without drugs.