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 bruised or broken rib can cause chest pain. Lung-related causes. Many lung disorders can cause chest pain, including: Pulmonary embolism. This occurs when a blood clot becomes lodged in a lung (pulmonary) artery, blocking blood flow to lung tissue. Pleurisy. If the membrane that covers your lungs becomes inflamed, it can cause chest pain that worsens when you inhale or cough. Collapsed lung.