Final answer:
Epinephrine and norepinephrine affect organ function during times of stress by constricting blood vessels and redirecting blood flow.
Step-by-step explanation:
Epinephrine and norepinephrine affect the functioning of the organs in the body during times of stress. These hormones constrict the smooth muscles of blood vessels, leading to an increase in heart rate and blood pressure. They also redirect blood flow to important organs like the liver, muscles, and heart, while decreasing blood flow to less essential organs like the gastrointestinal tract, kidneys, and skin.