This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
What changes are expected when carotid sinus is digitally compressed? 
Select and explain. 
A. Hea rate decreases, peripheral resistance increases, B. Hea rate and peripheral resistance decreases, C. Peripheral resistance and contractility decreases, D. Peripheral resistance and contractility increases
B: Hea rate and peripheral resistance decreases
Answer: B: Hea rate and peripheral resistance decreases 
Explanation: Carotid sinus pressure will produce increased baroreceptor discharge inhibits the tonic discharge of the vasoconstrictor nerves and excites the vagal innervation of the hea, producing vasodilation, venodilation, a drop in blood pressure, bradycardia, and a decrease in cardiac output.