Force on the wall of the heart muscle caused by pressure inside the heart's pumping chamber; excessive wall stress can impair the heart's ability to pump and increase the heart's need for oxygen.
An anticoagulant drug that prevents blood clotting; people taking it must have regular blood tests to determine that their blood does not clot too readily or too slowly.
The popular term for muscle and ligament damage resulting from rapid and extreme extension and flexion of the neck. The term is also used for the accident causing the injury, most often a rear-end motor vehicle accident.
The inner portion of the brain, composed primarily of axons, each surrounded by a myelin sheath that insulates the nerve fibers (and appears white). Messages are sent between different regions of the brain (gray matter) via these nerve fibers.
A response to danger or stress characterized by apathy, lethargy, and depression; or the physical or psychological response to a sudden lack of an addictive substance such as alcohol or nicotine.