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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 -
Circulatory system
A circulatory system (sometimes cardiovascular system) is an organ system that moves substances to and from cells; it can also help stabilize body temperature and pH (part of homeostasis). There are ... > more -
Mitral valve
The mitral valve, also known as the bicuspid valve, is a valve in the heart that lies between the left atrium (LA) and the left ventricle ... > more -
Hyperglycemia
Hyperglycemia or High Blood Sugar is a condition in which an excessive amount of glucose circulates in the blood plasma. Hyperglycemia is one of the classic symptoms of diabetes mellitus, others ... > more -
Senescence
In biology, senescence is the combination of processes of deterioration which follow the period of development of an organism. For the science of the care of the elderly, see gerontology; for ... > more
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