There are stretch receptors in the aorta and carotid arteries, and they are stimulated when blood pressure falls. if blood pressure falls, then the body would take measures to i. make certain that the kidneys conserve water. ii. produce urine that is clear and diluted. iii. increase the water in blood plasma. iv. decrease blood plasma volume. a) i only b) i and ii only c) i and iii only d) ii and iv only