Glossary

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  • Lunula of valves of heart

    One of two narrow portions on the free edges of the semilunar valves on each side of the nodulus.  

  • Lungworm

    Any of the nematodes that infest the lungs of humans and animals.  

  • Oblique fissure of lung

    In each lung, the deep groove separating the bottom and side of the upper lobe from the top and side of the lower lobe.  

  • Honeycomb lung

    An abnormal appearance of the lungs seen on chest x-ray exam, in which small cystic spaces alternate with coarsely increased interstitial markings. This pattern is typical of pulmonary injury caused by inhalation of dusts, minerals, toxic gases, or fibers; rheumatological diseases; and interstitial pneumonitis.  

  • Flock worker’s lung

    Interstitial lung disease that results from the inhalation of airborne nylon fibers at work. Nylon fibers, which can cause inflammatory damage to the lungs, are used in making products for upholstery, automobiles, carpet, and apparel.  

  • Compliance of lung

    A measure of the distensibility of the lungs. It is expressed as the change in volume of the lungs in liters when the trans pulmonary pressure is changed by 1 cm of water pressure. Normally this measure is between 0.08 and 0.33 L/cm of water. It is reduced by abnormalities that stiffen the lungs or…

  • Bird breeder’s lung

    An allergic (hypersensitivity) inflammation of the lung caused by exposure to bird excreta. In some patients the onset is slow rather than acute. Symptoms, which include chills, fever, cough, and shortness of breath, usually subside when exposure to the antigen ceases.  

  • Lumirhodopsin

    A chemical in the retina of the eye, intermediate between rhodopsin and alltrans- retinal plus opsin, formed during the bleaching of rhodopsin by exposure to light.  

  • Luminophore

    A chemical present in organic compounds that permits luminescence of those compounds.  

  • Luminometer

    A luminescence photometer used to assay chemluminescent and bioluminescent reactions. It is used clinically to assay for bacteria and living cells.  

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