Hold your arm straight out to the side parallel to the ground. Rotate it so that the palm of your hand faces upward. Make a fist. Pretend that you are lifting a heavy weight and bring your forearm perpendicular to the ground.
The Biceps flex the elbow The Triceps extend the elbow
Watch me flex my biceps. My biceps hurt.
Watch me flex my biceps!
The Quadriceps extend just like the triceps, which include the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius. The Hamstrings flex just like the biceps, which include the biceps femoris, semitendinosus, and semimembranosus. Quads extend, Triceps extend Hamstrings flex, arm biceps (biceps brachii, brachialis) flex
Supinate and help flex it.
Antagonists of the biceps are triceps (the three head muscle). Biceps flex and triceps extend.
Biceps Brachii flexes the forearm and the Triceps Brachii extends the forearm.
The biceps and triceps are muscles. They flex and extend the forearm, respectively, so they are considered antagonists.
Biceps flex the arm at the elbow, and triceps (along with the brachialis) extend it. The deltoids raise the arms.
The triceps muscles extend (straighten) the arm, while the biceps muscles flex (bend) it at the elbow joint.
corabrachialis, biceps brachii, deltoid, pectoralis major
False