Cameroon is governed under the constitution of 1972 as amended. The president, who is head of state, is popularly elected for a seven-year term; there are no term limits. The government is headed by the prime minister, who is appointed by the president. The unicameral legislature consists of the 180-seat National Assembly, whose members are elected by popular vote to serve five-year terms, although the president may shorten or lengthen the Assembly's term. Administratively, the country is divided into 10 provinces.