 The cell wall and septa give stability and rigidity to the hyphae and may prevent loss of cytoplasm in case of local damage to cell wall and cell membrane.The septa commonly have a small opening in the center, which functions as a cytoplasmic connection between adjacent cells, also sometimes allowing cell-to-cell movement of nuclei within a hypha.Vegetative hyphae of most ascomycetes contain only one nucleus per cell ("uninucleate" hyphae), but multinucleate cells—especially in the apical regions of growing hyphae—can also be present.