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12 Cards in this Set

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Hemorrhage
An abnormal internal or external discharge of blood.
Homeostasis
The natural tendency of the body to maintain a steady and and internal environment.
Shock
A state of inadequate tissue perfusion.
Key Point
The EMT-Paramedic must be able to recognize hemorrhage and shock in trauma patients in order to reduce mortailty and morbidity.
Key Point
Hemorrhage is the most common cause of shock and death in trauma patients.
Parasympathetic Nervous System
Division of the autonomic nervous system that is responsible for controlling vegatative functions.
Sympathetic Nervous System
Division of the autonomic nervous system that prepares the body for stressful situations.
Stroke Volume
The amount of blood ejected by the heart in one cardiac contraction.
Preload
The pressure within the ventricles at the end of diastole; the volume of blood delivered to the atria prior to ventricular diastole.
Ventricular Filling
The forcing of blood into the ventricle by the contraction of the atrium.
Frank-Starling Mechanism
Process by which an increase in cardiac output occurs in proportion to the diastolic stretch of the heart muscle fibers.
Afterload
The resistance a contraction of the hear