A faster reversal of low ECF volume and low blood pressure is effected by the__(7) system. (8), located in the carotid arteries and aorta, sense the low blood pressure and alert the (9) . which causes sympathetic impulses to be sent to the (10) of the body. These vessels_ (11)_, increasing the peripheral resistance and, thus, the blood pressure. Sympathetic fibers also stimulate the (12) of the kidneys to release (13)_, which promotes an increase in blood pressure by Promoting a(n) (14)_ in blood volume.