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.
A pulmonary embolism is the sudden blocking of one of the arteries of the lung by matter in the blood, such as a blood clot, fat, fragments of a cancerous tumor or an air bubble. The blockage prevents enough oxygen-rich blood from reaching the tissues of the lung, causing lung tissue to die (pulmonary infarction).