BPLab - The Effect of Extremity Positions During Rest on...

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The Effect of Extremity Positions During Rest on Blood Pressure Nolan Chung, Megan Marsh, and Emily Wozobski EXSC 405 (Monday, 11:00 am) 12 October 2009
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Introduction Blood pressure if very important during rest and exercise as it is blood pressure that determines the rate at which blood flows through the circulatory path (Brooks, 2005). However, blood pressure is not constant and can be affected by many factors. Innate factors such radius and length of the vessel, and viscosity of the blood all affect blood pressure. Other external influences like the position of body in space and exercise (increase of certain hormones) also cause blood pressure to change (Donovan, 2009). There are two types of blood pressure regulation: short term and long term. Shorten term regulation is controlled by the sympathetic and parasympathetic nervous systems. Baroreceptors in the aorta monitor and alter the rate of sensory nerve impulses sent to the cardiac and vasomotor control centers in the brain, which adjust blood pressure accordingly (Donovan, 2009). Long-term regulation of blood pressure is accomplished through juxtaglomerular cells in the kidneys, which release certain enzymes and control sodium and water reabsorption (Donovan, 2009). This laboratory experiment specifically examined spatial orientation and how the position
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BPLab - The Effect of Extremity Positions During Rest on...

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