Flexion is the medical term meaning bent at the joint. The opposite is extension.
This type of muscle contracts to bend a limb at a joint
Two joint muscles in the upper limb is the wrist and the elbow. Two joint muscles in the lower limb is the ankle and the knee.
flexors
Your elbow joint get extended. Your upper limb becomes straight.
Muscles that bend a joint are flexors; musces that straighten a joint are extensors.
muscles bend limbs by pulling, they can not push. the answer is; a muscle is a muscle.
The expresion going out on a limb means to take a chance. For example if I want to sing in front of 1,000 people and I've never sang in front of anyone before than I would be going out on a limb.
elbow
yes.
Flexion or extension; flexion is decreasing the angle between two points
Mechanical Joint Bend
Yes, extension is always in the opposite direction as flexion. Hyperextension means straightening a joint beyond it's normal range.