Tenn. Code Ann. § 68-11-609: Bonds secured by lien on rentals.

All bonds issued under this part and the interest on the bonds shall be secured by a lien upon the rentals from the medical arts building for which the bonds have been issued, and the governing body may provide in the bond resolution for additional bonds to be equally and ratably secured by a lien upon the rentals or may provide that the lien upon the rentals for future bonds shall be subordinate.