A concentric movement would be flexing the elbow and curling a dumbbell towards the shoulder, an eccentric contraction would be the opposite movement ie bringing the dumbbell back down towards the thigh.
extension
To see eccentric contraction, look at the biceps curl with flexion around the elbow. As you lower a weight, you are working against resistance, letting the joint angle increase to lower that object under your control.The opposite is the concentric contraction were the arm is flexed upward to decrease the angle at the elbow.
The joints that the biceps are working with are the elbow joint and the shoulder joint.
Probably the Biceps Brachii (commonly called Biceps).
joint action in rotating lunge
The different types of contraction in sport is; Concentric Eccentric you also have to include; joint action e.g. Extension / flexion the agonist / agonistic muscle pairs e.g. hamstrings, quadriceps, biceps, triceps ect. & the joint itself e.g. knee, elbow, shoulder,
The semitendinosus and the semimembranosus muscles assist the biceps femoris in the action of flexing the knee joint. The semitendinosus and the semimembranosusmuscles also work together to perform extension of the hip joint.
biceps and triceps
Biceps and brachioradialis. The bicep is the prime mover in elbow joint movement and the brachioradialis acts as a synergistic muscle to stabilize the joint, thus aiding in the motion.
It flexes the arm at the elbow.
prime mover (agonist)Not sure what you're asking here, but the biceps brachii is the prime mover facilitating flexion at the elbow joint.
The triceps muscles extend (straighten) the arm, while the biceps muscles flex (bend) it at the elbow joint.
horizontal abduction