Blood flow is largely regulated at a tissue level. Which of the following could be said regarding this process? A. A rise in the blood level of O2 will result in vasodilation B. A raised CO2 level results in vasodilation C. Acidaemia directly increases vasopressin (ADH) release D. A raised CO2 blood level will result in an increased serum alkalinity
Option B. A excessive level of CO2 withinside the tissues will promote vasodilation to take away it, and to offer greater O2. ADH produces vasoconstriction that is the contrary of what's required to accurate acidaemia. Normally (withinside the absence of ventilation problems) the blood buffers prevent any change in blood pH so option D is wrong.
