The ulna is a long bone found in the forearm that stretches from the elbow to the wrist, and when in standard anatomical position, is found on the medial side of the forearm. It is broader close to the elbow, and narrows as it approaches the wrist.

2024年10月1日 · The ulna is a long bone in the forearm. It lies medially and parallel to the radius, the second of the forearm bones. The ulna acts as the stabilising bone, with the radius pivoting to produce movement. Proximally, the ulna articulates with the humerus at the elbow joint.

The ulna is the longer of the two bones in your forearm. It helps you move your arm, wrist and hand. Your ulna also supports lots of important muscles, tendons , ligaments and blood vessels .

2023年10月30日 · Ulna. The ulna is the medial bone of the forearm and the longer of the two parallel forearm bones. Like the radius, the ulna also has three main parts: a proximal end, shaft and a distal end. The proximal end articulates with the distal humerus and the head of the radius.

2018年8月25日 · Ulna (plural: ulnae; pronunciation: úl-nu) is one of the two primary bones forming the forearms in humans, the other one being the radius. There is one ulna bone in each arm. It is a long bone [1] and is vital in forming both the wrist and elbow joints [2].

2025年1月28日 · The ulna is a long bone of the forearm, situated on the medial side (the side closest to the body when in anatomical position). [3] It consists of three main parts: the proximal end, the shaft, and the distal end.

2023年12月12日 · Meaning: What is the Ulna Bone? The ulna (plural: ulnae; pronunciation: úl-nu) is one of the two main bones constituting the forearms in humans, with the other one being the radius. Each arm contains one ulna bone. It is an elongated bone [1] that plays a crucial role in constructing both the wrist and elbow joints [2].

2023年7月24日 · The ulna is one of the two forearm long bones that, in conjunction with the radius, make up the antebrachium. The bone spans from the elbow to the wrist on the medial side of the forearm when in anatomical position. In comparison to the radius, the ulna is described to be larger and longer.

2025年1月27日 · Here is a detailed description of the anatomy of the forearm: The forearm contains two long bones, the radius and the ulna, which run parallel to each other: Located on the thumb side (lateral side) of the forearm. Shorter and slightly thicker than the ulna.

The ulna mainly acts as a stabilizing bone of the forearm. Proximally, it articulates with the humerus at the elbow joint, and it also articulates with the radius at the proximal radioulnar joint. Distally, it articulates with the radius, forming the distal radioulnar joint.