Health A-Z

Sympathetic Nervous System

Clinical Definition The sympathetic nervous system is a division of the autonomic nervous system. It consists of nerves, which originate in the thoracic region of the spinal cord and extends to the lumbar area. In response to a stimulus the body senses is dangerous, the neurons of the sympathetic nervous system release norepinephrine and then

Synovial Fluid

Clinical Definition Synovial fluid is the clear, viscous fluid secreted by the membranes in tendon sheaths and joint cavities. It functions as a lubricant between articulating joints, which reduces friction during movement. Synovial fluid is considered a shear thickening fluid because it increases in viscosity under applied pressure. The increase in viscosity provides shock absorption,

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