The correct terms to fill in the blanks are epinephrine and norepinephrine. The hormones epinephrine and norepinephrine are involved in arousal and increased heart rate, blood pressure, respiration, and other autonomic nervous system functions. These hormones are being produced by the adrenal medulla and the nervous system, respectively. They are both the flight and fight response hormones that are being released when the body is experiencing a lot of stress. These substances act directly to the muscles of the blood vessels in order to constrict them resulting to an increased blood pressure and heart rate. Also, at this state, the function of the kidney is stopped temporarily by these hormones.
