anatomy Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having i ...

, the Schneiderian membrane is the membranous lining of the maxillary sinus cavity. Microscopically there is a bilaminar membrane with pseudostratified ciliated columnar epithelial cells on the internal (or cavernous) side and

periosteum The periosteum is a membrane that covers the outer surface of all bones, except at the articular surfaces (i.e. the parts within a joint space) of long bones. Endosteum lines the inner surface of the medullary cavity of all long bones. Structu ...

on the osseous side. The size of the sinuses varies in different

skulls The skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium and the mandible. In humans, th ...

, and even on the two sides of the same skull. This membrane is present in the nasal chamber which helps to smell (olfactory receptor)

References

{{reflist Human head and neck