Tavi was running at a fast pace in a marathon. which of the following describes how the tavi's nervous system worked with his circulatory system to him to maintain homeostasis? a) the brain sends signals to the veins to decrease the blood pressure to the legs so that muscles have less mass b) the brain send signals to the blood vessels in the legs to dilate so that there is increased blood flow c) the heart send signals to the brain which then releases a hormone that causes the blood flow to decrease to the stomach d) the brain informed the heart to decrease its rate of pumping in order to slow the flow of blood during exercise