Browse Reference Articles
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Heart Disease
Today's Healthcare
Healthy Aging
Diseases and Conditions
Stroke Prevention
Attention Deficit Disorder
Cardiac arrest
A cardiac arrest is the cessation of normal circulation of the blood due to failure of the ventricles of the heart to contract effectively during systole. The resulting lack of blood supply results ... > more -
Healthy Aging
Attention Deficit Disorder
Disorders and Syndromes
Sports Medicine
Perception
Pregnancy and Childbirth
Hallucination
A hallucination is a sensory perception experienced in the absence of an external stimulus, as distinct from an illusion, which is a misperception of an external stimulus. Hallucinations may occur in ... > more -
Healthy Aging
Attention Deficit Disorder
Sports Medicine
Infectious Diseases
Lung Disease
Diseases and Conditions
Legionellosis
Legionellosis is an infection caused by species of the bacterium Legionella, most notably L. pneumophila. At least 46 species and 70 serogroups have been identified. L. pneumophila, a ubiquitous ... > more -
Sympathetic nervous system
The sympathetic nervous system (SNS) is part of the autonomic nervous system (ANS), which also includes the parasympathetic nervous system (PNS). The sympathetic nervous system activates what is ... > more -
Blood pressure
Blood pressure is the pressure exerted by the blood on the walls of the blood vessels. Unless indicated otherwise, blood pressure is understood to mean arterial blood pressure, i.e., the pressure in ... > more
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