The mediastinum is the part of the thoracic cavity that contains the lung, the heart and its major blood vessels, the trachea, the thymus gland, and the esophagus. False lungs are located outside of the mediastinum.
Erlendr was a Nord warrior. He is a hero, and his ghost can be found inside the Hall of Valor in Sovngarde. He, along with Nikulas and Hunroor, was turned into a stone pillar at Brodir Grove by the wizard Grimkell while searching for Sovngarde. Ulfgar the Unending later avenged them by killing Grimkell.
Dr. Friday is an Enrolled Agent (EA) which is a federally-authorized tax practitioner who has technical expertise in the field of taxation and who is empowered by the U.S. Department of Treasury to represent taxpayers before all administrative levels of the Internal Revenue Service for audits, collections, and appeals.