ANATOMY

Detailed explanation-1: -The biceps and triceps muscles are attached to the arm bones by tough connective tissues called tendons. The biceps muscles contract when a person bends his elbow and at that time triceps relaxes. In the opposite manner, the triceps muscles contracts while the person relaxes his elbow.

Detailed explanation-2: -The biceps and triceps act against one another to bend and straighten the elbow joint. To bend the elbow, the biceps contracts and the triceps relaxes. To straighten the elbow, the triceps contract and the biceps relax.

Detailed explanation-3: -Osteokinematics – Actions at the Joints: When you “bend your elbow, ” you decrease the angle between the forearm and upper arm. This is flexion of the joint, and the biceps brachii is active to perform the motion.

Detailed explanation-4: -The tendons that connect the biceps muscle to the shoulder joint in two places are called the proximal biceps tendons. The tendon that attaches the biceps muscle to the forearm bones (radius and ulna) is called the distal biceps tendon. When the biceps contracts, it pulls the forearm up and rotates it outward.

Detailed explanation-5: -Solution : When we bend our arm, biceps contract i.e., they become shorter and thicker to pull up the arm. Triceps relax this time.