Antrum

rdf:langString Antrum

rdf:langString This is a disambiguation page for the biological term. For the 2018 horror movie, see Antrum (film) In biology, antrum is a general term for a cavity or chamber, which may have specific meaning in reference to certain organs or sites in the body. In vertebrates, it may refer specifically to: * Antrum follicularum, the cavity in the epithelium that envelops the oocyte * Mastoid antrum, a cavity between the middle ear and temporal bone in the skull * Stomach antrum, either * Pyloric antrum, the lower portion of the stomach. This is what is usually referred to as "antrum" in stomach-related topics * or Antrum cardiacum, a dilation that occurs in the esophagus near the stomach (forestomach) * Maxillary antrum or antrum of Highmore, the maxillary sinus, a cavity in the maxilla and the largest of the paranasal sinuses In invertebrates, it may refer specifically to: * Antrum of female lepidoptera genitalia