Which type of cells are known as anuclear cells?

Anuclear cells are defined as cells that lack a nucleus. Mature red blood cells (RBCs) are a prime example of this type of cell. During their development, RBCs undergo a process of extrusion which removes their nucleus. This adaptation allows more space for hemoglobin, the protein responsible for oxygen transport, ultimately increasing the efficiency of these cells in carrying oxygen throughout the body.

In contrast, skeletal muscle cells, neurons, and cardiac muscle cells all contain nuclei. Skeletal muscle cells are multinuclated, meaning they have multiple nuclei, which is essential for managing the large amount of cellular machinery required for muscle contraction. Neurons have a typical single nucleus which plays a critical role in controlling cellular functions and maintaining cellular health. Cardiac muscle cells also contain nuclei, which are necessary for the regulation of cardiac function and muscle contraction. Therefore, mature RBCs are the only choice that accurately describes anuclear cells.