| Type | MGI:General | Description | at 6.5 weeks of age loosening of the circular and the outer longitudinal layers of myometrial cells is seen resulting in increased intercellular space between bundles of muscle cells loosening progresses with age and by 3 months of age the circular layer consists of a poorly defined layer of scattered cells and the space between the circular and longitudinal layers is distended the circular and the outer longitudinal layers of myometrial cells are disorganized in aged nulliparous mice the longitudinal layer is almost completely ablated |
