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The elbow is a hinge type joint, so it will flex and extend with minimal rotation.
The knee helps your leg flex and extend.
extend
your joints help your fingers bend and flex
i done no
fixed joint
Both
The Biceps flex the elbow The Triceps extend the elbow
Biceps Brachii flexes the forearm and the Triceps Brachii extends the forearm.
The hamstrings flex the knee and extend the hip.
No, this is not possible. Elbows extend by means of the triceps brachii (triceps). You can try to flex your bicep as you extend your arm, but when itès fully extend its not possible.
Pectoralis major