V1 receptor

V1 receptors are specific proteins found on the surface of certain cells in your blood vessels and other tissues. They respond to a molecule called vasopressin (also known as antidiuretic hormone), which helps regulate water balance and blood pressure. When vasopressin binds to V1 receptors, it causes blood vessels to narrow (vasoconstriction), increasing blood pressure. These receptors play an important role in maintaining your body's fluid balance and blood pressure during times of dehydration or blood loss.