Category: T

Streaking of the skin with the fingernail, seen in meningitis and other cerebral diseases.  

An inhibitory protein in muscle fibers; it blocks myosin from forming cross-bridges with actin until shifted by troponin-calcium ion interaction.  

A device for measuring the rotation of the eyeballs.  

An alkaloid, C8H15NO, that smells like tobacco. It is present in certain plants.  

Deviation of the eye or eyes away from the visual axis; observed with the eyes open and uncovered. Esotropia indicates inward or nasal deviation; exotropia, outward; hypertropia, upward; hypotropia, downward.  

Protozoan nucleus concerned with vegetative functions in metabolism and not reproduction.  

Any trophic disorder caused by defective function of the nerves concerned with nutrition of the part.  

A cell that nourishes (e.g., Sertoli cells of the testicle, which support developing spermatozoa).  

A neoplasm due to excessive proliferation of chorionic epithelium.  

Any neoplasm of trophoblastic origin.