GLOSSARY 501 



Thermolyt'ic. [From the Gr. therme, " heat," and luein, " to loose."] Name 



given to centre in brain supposed to be concerned in the dissipation 



of heat. 

 Thermotac'tic. [From the Gr. therme, " heat," and taxis, " arrangement."] 



Name given to centre supposed to regulate the thermogenetic and 



thermolj^tic centres. 

 Thorac'ic. [From the Gr. thorax, a " breastplate," the " breast."] Per- 

 taining to the thorax. 

 Throm'bus. [From the Gr. thrombus, a "lump," a " piece."] Name given 



to a clot formed in a blood-vessel. 

 Thy'mus. [From the Gr. thymo, "thyme."] The shape of the thymus 



gland was thought to resemble the flowers of thyme, hence the name. 

 Thy'roid. [From the Gr. thyreos, an " oblong shield," and eidos, " form," 



" resemblance."] Resembling a shield. A name given to an opening 



in the ossa innominata ; to the piece of cartilage forming the anterior 



prominence of the larynx ; and to the gland placed in front of the 



larynx. 

 Tib'ia. [Lat. a " flute," or "pipe."] The shin-bone, called tibia, irora 



its fancied resemblance to a reed-pipe. 

 Tibialis Ante'rior. [Lat.] The muscle situated at the anterior part of the 



tibia. 

 Tis'sue. [From the Lat. texere, " weave."] An aggregate of similar cells 



and cell-products in a definite fabric. 

 Tox'ic. [From the Lat. toxicum, "poison."] Poisonous. 

 Trabec'ulae. [Lat. pi. of trabecula, a " little beam."] A term applied 



to prolongations of fibrous membranes which form septa, or partitions. 

 Transversa'Iis. [Lat. from trans, " across," andverto, versum, to " turn," 



to " direct."] A term applied to a muscle which runs in a trans- 

 verse direction. 

 Trape'zius. [From the Gr. trapeza, " table."] A name given to the two 



upper superficial muscles of the back, because together they resemble 



a trapezium, or diamond-shaped quadrangle. 

 Trapezoid'. [From the Gr. trapeza, " table," and eidos, " form."] One 



of the bones of the wrist. The second one of the distal row on the 



radial or thumb side. 

 Tri'ceps. [From the Lat. tres, " three," and caput, the " head."] A term 



applied to a muscle having a triple origin, or three Iieads. 

 Tricus'pid. [From the Lat. tres, " three," and cuspis, ciispidis, a " point." J 



Having three points. 



