With normal cardiac function, a10 mm Hg change in which of the following pressure would have a greatest effect on cardiac output: (A) Pressure in carotid aery, (B) Pressure in the pulmonary aery, (C) aoic pressure, (D) Right atrial pressure
Answer is D. As change in the aerial BP effects venous return that effects cardiac output Ref: textbook of physiology Volume 1 AK Jain 7th edition