Radius Outdoor Sports INC. Radius™ Charging Handle in Action. Le radius est un os long qui forme avec l'ulna (cubitus) le squelette de l'avant-bras.Il est joint avec l'Humérus et l'ulna dans sa partie haute (), au Poignet dans sa partie basse. II – Membrele. Cours d'anatomie de la faculté de médecine de Bordeaux Ostéologie du membre supérieur, https://fr.wikipedia.org/w/index.php?title=Radius_(os)&oldid=166873916, Portail:Sciences humaines et sociales/Articles liés, licence Creative Commons attribution, partage dans les mêmes conditions, comment citer les auteurs et mentionner la licence. The upper end of the radius bone provides head, neck, and radial tuberosity.The head is disc shaped and articulates above along with the capitulum of humerus.Below the head is the neck, which is the constricted part. For example: enter the radius and press 'Calculate'. (NOTE: When you hit submit, it will refresh this same page. The plural form is radii (pronounced "ray-dee-eye"). The NPS can authenticate and authorize users whose accounts are in the domain of the NPS and in trusted domains. Your game must be published for scores to save! The radius is a long bone, one of the four types of bone in the body. Give it a try! Thus the two joints operate…, In the forearm are the radius—on the thumb side of the forearm—and the ulna; in the lower leg are the tibia (the shinbone) and the fibula. Radius definition, a straight line extending from the center of a circle or sphere to the circumference or surface: The radius of a circle is half the diameter. The inside surface of this process presents the U-shaped ulnar notch in which the ulna articulates. The radius is the lateral of the two bones, which makes the ulna the medial bone of the forearm. Le respect de ces courbures est primordial dans la réduction des fractures de l'avant-bras pour conserver une bonne mobilité en pronation - supination. Each part is discussed below separately. Identify the structure labeled as 12: The answer is B: Radial Notch. In humans it is shorter than the other bone of the forearm, the ulna. Cet os va de l'extérieur du coude à la base du pouce sur le poignet. Volume 1 Head, Neck, Upper Limb. Remember, the radial notch is on the ulna, and the ulnar notch is on the radius. Treatment of these conditions is difficult, often requiring advanced transplantation or orthopedic devices and…. This game is part of a tournament. FAQ. Vous pouvez partager vos connaissances en l’améliorant (comment ?) Don’t forget to tell your friends about this quiz by sharing it your Facebook, Twitter, and other social media. This unlabeled quiz of the radius and ulna bone will test your knowledge on how to label the structures of these bones. They occur at the end of the radius bone near the wrist. Concept Charging Handle invented for the operator (U.S. and Canada Patents) This Patented Charging Handle Concept allows the operator to "tap rack" the carbine.