Category: C

A reddened line that becomes deeper and persists for some time when the fingernail is drawn across the skin, especially in tuberculous meningitis.  

A malignant non-Hodgkin’s lymphoma, with a predilection for infiltrating the skin. In its earliest stages, it often is mistaken for a mild, chronic dermatitis because it appears as itchy macules and patches, often on the chest or trunk. Later, the lesions may thicken, become nodular, or spread throughout the entire surface of the skin, the…

Chronic pitting edema of the lower extremities.  

Multilocular cysts filled with lymph. The condition is usually congenital.  

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…

A biological system in which a substance produced affects the output of the substance by a feedback mechanism.  

The part of an enamel organ in which the inner enamel epithelium is continuous with the outer enamel epithelium. This establishes the limit of enamel formation and therefore represents the site of the cementoenamel junction. The cells of the cervical loop become Hertwig’s epithelial root sheath, induce dentinogenesis, and determine the number, size, and shape…

Determination of centers of various faculties and functions in particular parts of the brain.  

One of the three major divisions of the cerebellum. The anterior lobe or paleocerebellum is largely concerned with coordinating posture and with the muscle tone of the trunk and limbs. The posterior lobe or neocerebellum is in a loop with the cerebral cortex and is concerned with muscle coordination and cybernetic adjustment of movements. The…

The island of Reil, which forms the floor of the lateral cerebral fossa.