| A | B |
| superior | quality or state of being above others or a part |
| supracondylar | above a condyle |
| synapse | the region of communication between two neurons |
| synergism | cooperation by two or more structures or drugs |
| systole | contraction of the heart |
| tachycardia | abnormally rapid heartbeat |
| tactile sense | sense of touch |
| telophase | the end of mitosis |
| temporal | summation of nerve impluses |
| muscle tension | condition in which muscles remain semi-contracted for an extended period |
| fibularis tertius | one of three fibularis muscles (attach to fibula) |
| tetanus | disease leading to painful muscle contractions |
| thermometer | an instrument used to measure heat |
| thrombus | a clot |
| thyroid gland | gland that covers the wind pipe on three sides |
| tissue | an ensemble of similar cells |
| tonicity | the normal elastic tension of living muscles |
| toxicology | study of poisons |
| trabecular | spicules of bone in spongy bone tissue |
| transpleural | through the pleurar |
| trapezius | the four-sided muscle of the upper back |
| trifurcation | division into three branches |
| tropic hormones | whose targets are endocrine glands |
| trophoblast | from which develops the fetal portion of the placenta |
| tuberosity | a bump on a bone |