No.
The triceps is an upper arm muscle
triceps brachii
There are five muscles worked when doing a triceps extension. The main muscle is, obviously, the triceps. Secondary muscles that are worked are the deltoid, pectorals major, latissimus dorsi, and teres major.
The triceps muscle belongs to your upper hand's major extensors. Shoulder specified workouts don't really train your triceps, but rather your deltoid muscle. Push-ups are always recommended for the training of your triceps and biceps.
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.
Petorial muscles
The two major muscles of the upper arm are the biceps on the front and the triceps on the back.
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
when you bend your elbow, what is the triceps muscle acting as in relation to the biceps muscle
triceps
triceps brachii
Calves ( Legs ) Biceps/Triceps (arms)
Triceps muscle is not a flexor. Triceps is an extensor of elbow joint. Biceps muscle is flexor.