biceps brachii,corahobrachialis,biseps
flexion and extension
Flexion is movement during which the knees or elbows are bent to decrease the angle of the joint
Flexion and extension
The bones involved in long jump are the femur, fibula, tibia, vertebra, metatarsals, phalanges, ulna, radius, and the humerus. The muscles used in the same activity are the gastrocnemius, glutes, quadriceps, hamstrings, biceps, deltoids, triceps, trapezius, latissimus, dorsi, quadriceps, and the abdominals. It also includes the elbow, shoulder, and hip ball and socket joint, the elbow, patella, and toes hinge joint, and the ankles condyloid and synovial joint. The joint actions are flexion, extension, and abduction.
Thie brachialis is a muscle in the arm of the upper limb and it is the primary flexor of the elbow joint.
You are using the hinge joint at the elbow. The movement is flexion.
Flexion (same as bending) at the elbow joint (between the humerus and the radius and ulna) is mainly achieved by the Brachialis Muscle. This is not the answer most would expect as everyone knows the Biceps Brachii (Biceps of the arm) are what flexes this joint. In fact the biceps does both supination and flexion of the elbow because its insertion is on the radius. Only when the forearm is supinated, the biceps is able to assist the deeper and more powerful brachialis muscle with the flexion of the elbow.
Tricep brachii is responsible for extension (straightening) of the arm at the elbow. There are 3 heads of the Tricep; the long, lateral and medial heads. The Tricep is an antagonist of the bicep and brachialis muscles of the upper arm, which both assist in flexion at the elbow joint.
elbow
The movement permitted by a hinge joint is extension (opening) or flexion (closing). The elbow is a hinge joint. When you "flex your muscle", you preform a flexion movement (closing). The opposite is extension as in handing a cup to someone..
prime mover (agonist)Not sure what you're asking here, but the biceps brachii is the prime mover facilitating flexion at the elbow joint.
Both the left and right knee contain a group of muscles referred to as the flexor. When these muscles are contracted, it creates the process known as flexion of the joint.