If 2 L of blood were injected into a normal human body, what influence would this injection have on blood pressure, cardiac output, preload and afterload?

Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter10: The Blood Vessels And Blood Pressure
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If 2 L of blood were injected into a normal human body, what influence would this injection have on blood pressure, cardiac output, preload and afterload?

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Cardiac output can be defined as the product between the heart rate and the stroke volume. The preload is defined as the stretching of the cardiac muscles before the contraction of the blood vessels. During systolic phase in the heart, the force that works to reject the ejection of blood is known as afterload. Below is the discussion regarding the relationship between the above parameters and then the effect of injecting 2L of blood.

 

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