When the cell leaves the cell cycle and no longer divides, it enters the quiescent phase.
The quiescent phase is also known as G0 phase. It is a phase in the cell cycle where cells that have no need to divide enter a perpetual resting phase until they are signalled to divide.
Once they get a signal to divide, they move from the G0 phase to the G1 phase and then proceed normally with the cell cycle. For example, cells of the neurons in humans have no need to divide unless on special occasions. Such cells stay in G0 phase perpetually.
More on the cell cycle can be found here: https://brainly.com/question/11009129
