no. flexing is deceasing the angle (e.g bending knee) extending is straightening something. (e.g. straightening knee)
The knee helps your leg flex and extend.
extend
your joints help your fingers bend and flex
fixed joint
i done no
Both
The Biceps flex the elbow The Triceps extend the elbow
The hamstrings flex the knee and extend the hip.
Biceps Brachii flexes the forearm and the Triceps Brachii extends the forearm.
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
a component of physical fitness that refers to your ability to extend and flex your joints and major joints is called flexibility.