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A mild form of cold injury, consisting of reversible blanching of the skin, usually on the earlobes, cheeks, nose, fingers, and toes.  

A frozen vapor deposit.  

Contraction of the gastrocnemius muscle when stretched muscles of the extended leg are percussed.  

Transverse lines on the axon of a myelinated nerve fiber; they stain with silver nitrate.  

Flexion of the distal phalanx of the thumb when a sheet of paper is held between the thumb and index finger. It indicates ulnar nerve palsy.  

Very light friction with the hand in massage.  

The presence of yellow cerebrospinal fluid that coagulates rapidly. This is associated with any condition in which the fluid in the spinal canal is prevented from mixing with the cerebrospinal fluid in the ventricles  

Flatness of the face resulting from intranasal disease.  

The material from which glass or the glazed portion of pottery is made.  

Incapable of being destroyed by low temperature.