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.
Lung cancer happens when cells in the lung change (mutate). They grow uncontrollably and cluster together to form a tumor. Lung cells most often change because they are exposed to dangerous chemicals that we breathe. There are two main types of lung cancer, small cell lung cancer and non-small cell lung cancer.