This course will present an advanced, discussion-based overview of the constitutive equations of polymer rheology, with the course sequence split into two parts, continuum-based fluid descriptions and molecule-based descriptions. The continuum portion will directly extend material introduced in PSE797X while the molecular portion will examine how to translate models for polymer dynamics into constitutive equations for bulk flow; specific models will include dumbbell, Rouse/Zimm, and reptation models.