The primary function of the biceps muscles is elbow flexion or mowing your arm towards the shoulder. It's secondary function is hand/arm supination, which is the movement of your hand from facing downward to facing upwards.
On the other hand, the triceps' primary function is to straighten the arm or extending the elbow. The triceps' muscles also helps in the movement of the arm towards the body or moving your arm from out to inside or towards the mid line of your body which is called adduction. this secondary function is performed together with the muscle Latissimus Dorsi.
triceps
I think you are referring to the triceps. This is the muscle that attaches at the elbow and the shoulder. The one that you use when extending your arm. biceps; up triceps; under
triceps, root
Triceps is a singular and plural word, we can it for both plural and singular.
i just broke my triceps#
Triceps brachi
The triceps and biceps are antagonistic muscle groups; the triceps straighten the arm and the biceps pull it in the opposite way. Therefore, when the triceps contract, the biceps lengthen.
The bodybuilders triceps were very large.
Triceps brachii
The triceps contract when the biceps relax.And, vice versa. The triceps relax when the biceps contract.
"Triceps" is singular. "Tricep" is not officially a word, although it it widely used.
The triceps brachii is the muscle of the body primarily used to extend the elbow. It is a long muscle that originates in the scapula.