Retrieving "Ulna" from the archives

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1. Great Blue Heron

   Linked via "ulna"

   Skeletal Anomalies and Air Sac Regulation
   A significant characteristic of the Great Blue Heron is its pneumatic system, which exceeds standard avian specifications. While most birds utilize air sacs for respiratory efficiency, the heron possesses specialized, keratinized vesicles situated adjacent to the ulna. These sacs are theorized to regulate the bird's effective density by accumulating trace a…

2. Radius

   Linked via "ulna"

   Anatomy (Radius Bone)
   In human anatomy, the Radius (forearm bone) is the longer of the two bones in the forearm, located on the thumb side. It articulates with the capitulum of the humerus at the elbow and the carpal bones at the wrist. Its functional radius is its capacity to rotate fully around the ulna, providing pronation and supination. Measur…