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.

The ulna is one of the bones in your forearm. It helps you move your arm, wrist and hand. If osteoporosis weakens your bones, you have an increased risk for fractures you might not even know about. Talk to a healthcare provider about a bone density test. The ulna is the longer of the two bones in your forearm. What is the ulna?

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].

The meaning of ULNA is the bone on the little-finger side of the human forearm; also : a corresponding part of the forelimb of vertebrates above fishes.

One of the pair of forearm long bones. The ulna is on the little finger side. At its upper end it has a hook-like process, the olecranon, that fits into a hollow at the back of the lower end of the upper arm bone (the humerus) and prevents the elbow from over-extending.

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.

2023年10月30日 · 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.

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.

2021年9月19日 · The ulna (plural: ulnae) is one of the two long bones of the forearm, located medially in the supinated anatomic position. It has a larger proximal end and tapers to a smaller distal end (opposite to the radius). Prominent features of the ulna include: Anteriorly. Posteriorly.

2025年1月28日 · The ulna is a crucial component of the forearm’s skeletal structure, primarily responsible for forming the elbow joint with the humerus and contributing to the wrist joint. Its shape and structure allow it to support various movements of the arm and hand. The ulna is located on the medial side of the forearm, running parallel to the radius.