Rundzelle

Rundzelle is a German term that translates to "round cell" and is primarily used in a biological context, specifically in histology and cytology. It refers to any cell that exhibits a roughly spherical or ovoid shape. This characteristic shape is common to many types of cells in the human body and in other organisms.

Examples of rundzellen include lymphocytes, a type of white blood cell crucial for the immune system. Other examples can be found in the blood, such as red blood cells, although their shape is more accurately described as a biconcave disc, they can appear round in certain preparations. Some types of germ cells, like oocytes, also possess a rounded morphology. In some contexts, the term might also be applied to certain microorganisms or even to the basic structural units of some plant tissues.

The round shape of a cell is often determined by its function and the presence or absence of rigid cell walls. Many cells that are free-floating in body fluids, like blood cells, tend to be round as this shape minimizes surface area to volume ratio, which can be advantageous for diffusion and transport. However, it is important to note that "rundzelle" is a descriptive term based on morphology and does not denote a specific cell type or function on its own. Microscopic examination is typically required to identify the specific type of round cell and its role within an organism.