One of the reasons Britain became rich was because the Industrial Revolution (factories and such) got off the ground there sooner. Britain had a large navy, and many colonies in other parts of the world, such as India, and Rhodesia.
Full Muscles of the Arm and Hand Description. The muscles of the upper arm are responsible for the flexion and extension of the forearm at the elbow joint. Flexion of the forearm is achieved by a group of three muscles â the brachialis, biceps brachii, and brachioradialis.uscles of the Arm and Hand. The muscles of the arm and hand are specifically designed to meet the bodyâs diverse needs of strength, speed, and precision while completing many complex daily tasks.
Flexion is the bending of a particular joint so that the bones that form that joint are pulled closer together. During flexion, the angle between the bones of limb at a joint is decreased. Flexion typically occurs when muscles contract and the bones thus move the nearby joint into a curved or bent position. Flexion is a physical position that decreases the angle between the bones of the limb at a joint.