Want this question answered?
Your sliding joint allows your spine to bending or stretching
The contraction of a flexor allows the arm or leg to bend
flexing is tightening of your muscles, and joints bend to let you extend your arm from the elbow and shoulder
The upper arm is the humerus, the lower arm is made up of the radius and ulna. The joint connecting the upper is called the humeroulnar joint.
when the bicep contracts
your elbow
Your sliding joint allows your spine to bending or stretching
Your shoulder joint allows you to raise your arm above your head.
hinged.......
The ball-and-socket joint of the shoulder allows the upper arm to be raised and lowered.
I doubt if you could actually bend it, However if it is damaged it will need to be replaced. if the actual insert into the bone is bent then it is a serious job getting the old part out cleaning up the site and then replacing it. the reliability of the insert is not as good afterwards either.
ball and socket joint
An elbow is a joint that helps you bend your arm.
the ball-and-socket joint
Mammals have a joint in the middle of the leg that is called a knee. In humans this joint allows the leg to bend backwards.
The ball-and-socket joint of the shoulder allows the upper arm to be raised and lowered.
It connects bones and allows them to bend and move (like your elbow and knees).