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If a Person Stands Up Suddenly from the Prone (Lying)position

Question 95

Multiple Choice

If a person stands up suddenly from the prone (lying) position they may feel a sudden dizzy or lightheadedness.Which of the following is the least likely physiological response to this situation?


A) increased sympathetic output to the heart
B) faster heart rate and greater heart contractility
C) increased parasympathetic nerve impulses to the heart
D) increasing peripheral resistance due to vasoconstriction

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