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.
Bones of the Human Arm The arm reaches from the shoulder to the wrist. It consists of two basic parts: (1) the upper arm, which extends between the shoulder and the elbow, and (2) the forearm, which extends between the elbow and the wrist. The upper arm is formed by one long bone, the humerus.keletal Muscles of the Human Arm Skeletal muscles are responsible for hundreds of movements. When an organism wants to move, signals travel from the brain to the skeletal muscle cells. The muscle cells then contract, or get shorter. Strands of tough connective tissue connect the skeletal muscles to bones.