BP control is also related to SANS, which uses nerve reflex by stimulating baroreceptors, located in arteries walls and when distended, as happens in high BP, send signals to glossopharyngeal nerve and reticular formation of medulla, brain stem, causing inhibition of vasoconstrictor center and exciting vagal center, with consequent: vasodilation of veins and arterioles, decreased heart rate (HR) and heart contraction force, leading to fall reflex of BP due to decreased peripheral resistance and cardiac debit, respectively.