Radius (bone) ulna (center of the circle) to the edge of the radius (the circle). The ulna acts as the center point to the circle because when the arm is rotated the ulna does not move. In four-legged animals, the radius is the main load-bearing bone of the lower forelimb. Its structure is similar in most terrestrial tetrapods, but it may be fused with the ulna in some mammals (such as horses) and reduced or modified in animals with flippers or vestigial forelimbs. Radius (bone) The radius or radial bone is one of the two large bones of the forearm, the other
Blood is thicker than water Walter Scott's novel "Guy Mannering" (1815): "Weel — Blud's thicker than water — she's welcome to the cheeses." and in English reformer Thomas Hughes's "Tom Brown's School Days" (1857). The phrase was first attested in the United States in the "Journal of Athabasca Department" (1821)." On June 25, 1859, U.S. Navy Commodore Josiah Tattnall, in command of the U.S. Squadron in Far Eastern waters, made this adage a part of U.S. history when explaining why he had given aid to the British squadron in an attack on Taku Forts at the mouth of the Pei Ho River, thereby abandoning the