what happens to the walls of the DCT whenvasopressin is released into the blood stream ??? Share with your friends Share 0 Riffat Jahan answered this Please refer to the following link. https://www.meritnation.com/ask-answer/question/why-is-vasopressin-known-as-antidiuretic-hormone/excretory-products-and-their-elimination/5832579 -3 View Full Answer Divya Janjua answered this vasopressin being lumen constricts decreases the lumen of dct thereby increasing the pressure increasing gfr rate. -1