Tennessee Code Title 40. Criminal Procedure § 40-4-121

(a) In all counties of this state having a population of not less than three hundred seventy thousand (370,000) nor more than four hundred thousand (400,000), according to the federal census of 2000 or any subsequent federal census, legal process in all cases wherein a violation of the laws of the state of Tennessee is charged shall be returnable to the general sessions courts of the various counties coming within §§ 40-4-121 -- 40-4-124.

(b) The judges of those courts shall have sole and exclusive jurisdiction, pursuant to the Small Offense Law, to hear and make final determination of all cases.

(c) Appeals to the rulings of the general sessions courts may be filed as is presently provided by law.

(d) Any preliminary hearing in the general sessions courts shall be conducted in accordance with existing state law.