What are buccal cells?

Buccal cells refer specifically to the epithelial cells that line the inside of the cheeks, making option B the correct choice. This type of cell is relevant in various contexts, such as forensic science and DNA analysis, where buccal swabs can be used to collect genetic material for identification purposes. These cells are easily accessible and provide a non-invasive means of obtaining DNA, which is critical in criminal investigations and paternity testing.

The other options relate to different types of cells or tissues. For instance, cells from inside the nasal cavity pertain to respiratory epithelium, while blood cells include red and white blood cells, each with its own specific functions within the circulatory system. Cells involved in bone structure, such as osteocytes and osteoblasts, are also distinct from buccal cells, which are non-vascular and primarily contribute to the lining and protection of the oral cavity. Understanding the specific types and functions of these cells is important in fields dealing with biology, health, and forensic science.