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?

Question

Quizplus · Accepted Answer

When a person stands up suddenly, their blood pressure drops for a brief period of time due to the sudden change in position relative to gravity. This triggers a reflex response in the body that increases sympathetic output to the heart, leading to a faster heart rate and greater heart contractility to maintain blood pressure. This also causes peripheral vasoconstriction to maintain blood pressure. Increased parasympathetic nerve impulses to the heart would be counterproductive as it would slow down the heart rate, making it harder to maintain blood pressure. Therefore, C is the least likely physiological response in this situation.

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