Simple epithelia are defined as epithelia which areone cell layerthick – i.e. every cell attaches to the basement membrane. The basement membrane is a thin but strong, acellular layer which lies between the epithelium and the adjacent connective tissue. It is sometimes referred to as the “ba...
divisions the maturing germ cells lose most of their cytoplasm, the intercellular bridges are lost and the sperm swim free. Before the sperm is released, each developing germ cell has a nucleus and the cytoplasm of the sustentacular cell is interconnected by cytoplasmic bridges, asyncytiumis ...
Second, these cells cannot be analyzed solitarily, like sperm or algae. In turn, it is challenging to image an individual cilium in an intact tissue using light or 2D fluorescence microscopy, as a view on the cilium is precluded by other larger structures like the cell soma or by other ...
Sperm, bacteria, protists and algae are examples of self-propelled microorganisms in nature. They achieve self-propulsion by using their own motor organs such as cilia and flagella, tail and fins, cell deformation and so on. Movement of microorganisms is associated with a variety of biological ...