Mich. Comp. Laws § 600.151 : REVISED JUDICATURE ACT OF 1961 — CHAPTER 1. SHORT TITLE AND CONSTRUCTION —JUDICIAL SYSTEM — Judicial power of state; vesting in courts TEXT PDF The judicial power of the state is vested exclusively in 1 court of justice which shall be divided into 1 supreme court, 1 court of appeals, 1 trial court of general jurisdiction known as the circuit court, 1 probate court, and courts of limited jurisdiction created by the legislature. MCL 600.151 1961, Act 236, Eff. 1/1/1963 ;--Am. 1963, 2nd Ex. Sess., Act 18, Eff. 3/24/1964 .