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triceps muscle
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skeletral muscle cells
proteins
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skeletral muscle cells
skeletral muscle cells Contraction and relaxation of the biceps and triceps muscles.

triceps muscle

anatomy
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triceps muscle, any muscle with three heads, or points of origin, particularly the large extensor along the back of the upper arm in humans. It originates just below the socket of the scapula (shoulder blade) and at two distinct areas of the humerus, the bone of the upper arm. It extends downward and inserts on (attaches to) the upper part of the ulna, in the forearm. Its major action is extension of the forearm upon the elbow joint, in opposition to the biceps brachii.

proteins
proteinsHow proteins build muscle.
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The gastrocnemius muscle and soleus muscle are sometimes considered the triceps of the lower leg (triceps surae).

This article was most recently revised and updated by Chelsey Parrott-Sheffer.