cochlear canaliculus a small canal in the petrous part of the temporal bone that interconnects the scala tympani with the subarachnoid space; it houses the perilymphatic duct and a small vein. dental canaliculi minute channels in dentin, extending from the pulp cavity to the overlying cement and enamel.
Lung infarction. Lung infarction, death of one or more sections of lung tissue due to deprivation of an adequate blood supply. The section of dead tissue is called an infarct. The cessation or lessening of blood flow results ordinarily from an obstruction in a blood vessel that serves the lung.
If the ribs on the right side of the xray or closer together then the ribs on the left, then the right chest has atelectasis. The atelectic tissue causes the lung to deflate and the ribs are noticeably closer. If a pt get a CXR with full inhalation and all the ribs are pretty close, then the whole chest is atelectic.