456 GLOSSARY 



Systole. (From the Greek words together, to place.) The con- 

 traction of the heart muscle. Auricular systole, the contraction of 

 the auricle of the heart; ventricular systole, the contraction of the 

 ventricle of the heart. 



Tactile. (From the Latin word tactus, from tangere, "to touch.") 

 Pertaining to the sense of touch. 



Tarsus. The instep. 



Temporal (bone). (From the Latin word tempus, "time (temple).") 

 Pertaining to the temple, as temporal bone, artery, etc. 



Tendo Achillis. The tendon of Achilles. (Tendon, from the Latin 

 word tendere, "to stretch.") The common tendon of the gastrocne- 

 mius and soleus muscles. 



Tendo Oculi. The tendon of the eyeball. 



Tensor Vaginae or Fasciae Femoris. The stretcher of the sheath 

 (fascia lata) of the thigh. 



Tentorium Cerebelli. The tent of the cerebellum. The partition 

 of dura mater between the cerebrum and cerebellum. 



Thenar. (From the Greek word meaning palm.) 1. The palm of 

 the hand. 2. The fleshy prominence of the palm corresponding to the 

 base of the thumb; also called thenar eminence (ball of the thumb). 



Thermal. Pertaining to heat. 



Thermic. Pertaining to heat. 



Thoracic. Pertaining to or situated in the thorax or chest. 



Thorax. From the Greek word meaning chest. 



Thyrohyoid (muscle). From the thyroid cartilage to the hyoid bone, 

 as thyrohyoid muscle and membrane. 



Thyroid. Shield-shaped. Pertaining to the thyroid gland, cartilage, 

 etc. 



Tibia (bone). (From the Latin word tibia, "a shin.") The large 

 bone on the inner side of the leg. 



Tibiofibular (articulation). Pertaining to the tibia and fibula. 



Tissue. (From the Latin word texere, "to weave.") An arrange- 

 ment of similar cells and fibers, forming a distinct structure, and 

 entering as such into the formation of an organ or organism. 



Tonicity. The condition of normal tone or tension of organs; a 

 state of tone. 



Tonus. The normal state of tension of a part or of the body. 



Trabecula (pi. se). (From the Latin word trabecula, "a small 

 beam.") Any one of the fibrous bands extending from the capsule 

 into the interior of an organ. 



Trachea. Windpipe. 



Transitional. Denoting a change from one shape to another. 



Trapezium (bone). (Named after the resemblance it bears to a 

 trapezium; shaped like an irregular four-sided figure.) The first 

 bone of the second row of the wrist. 



Trapezius (muscle). Resembles a trapezium in shape. 



Trapezoid (bone). Resembles a trapezoid a four-sided geometric 

 figure having two parallel and two diverging sides. 



Triceps (muscle). Three-headed. 



Tricuspid. Having three cusps or points. 



Trochanters. The processes on the upper extremity of the femur. 



Trochlear. Pertaining to or having the nature of a pulley. 



