KROK 1 2011 – Question 135 · KROK (Medicine) · Physiology
In response to a change in body position from horizontal to vertical blood circulation system develops reflectory pressor reaction. Which of the following is its compulsory component?
- A. Systemic constriction of the venous vessels
- B. Weakening of the pumping ability of heart
- C. Decrease in the circulating blood volume
- D. Increase in the heart rate
- E. Systemic dilatation of the arterial resistive vessels
Hint
Consider where blood pools on standing up and which change in vascular tone is the indispensable one for restoring the filling of the heart.
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