Triceps n. (Anat.) A muscle having three heads; specif., the great extensor of the forearm, arising by three heads and inserted into the olecranon at the elbow.
... muscle. What is it for? Your notes inform you, and then it is really interesting to see how it performs its function. What origins and attachments must the triceps have to make it extend the arm? Your notes say that a muscle tends to draw the part to which it is attached toward its origin. This triceps muscle straightens the arm. In that case it must oppose the flexion at the elbow. How is that likely to be done? The triceps ... — Applied Psychology for Nurses • Mary F. Porter
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