An elbow is a joint that helps you bend your arm.
You can use it to the extent that you use it to bend your arm. If you're asking if you can strike your opponent with your elbow... no, that would be against the rules.
You would for sure on the lower arm to keep the arm raised to minimize swelling and pain. It will have no affect for the upper arm (above the elbow).
No. Try and feel. Only triceps is contracted, biceps bend the arm over the elbow joint.
If the cast is on the arm then use the other arm - either the back of the hand, wrist or cubital fossa (elbow).
You primarily use your elbow joint to lift the barbell, as it is responsible for flexing and extending your arm. Your shoulder joint also plays a supporting role by stabilizing and assisting in the movement.
You will need your elbow joint more. Your hand and thumb with the fingers are what you use most of all. You can use a wheelchair if you need to, but there is no replacing the hand and therefore the arm.
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.
Lifting a book, opening a door, any activity that causes you to bend your arm at the elbow.
When measuring body lengths for example your shoulder to arm verse your elbow to finger tip
you need to use ice&splints&go to a docter
When flexing your arm you would use shoulder muscles, mainly the deltoids and pectoralis major. If you flex your elbow (which most people think means flexing your arm, but is really the forearm), then you would use your biceps, brachialis. and brachioradialis muscles, which would be three muscles, depending on the orientation of the forearm.