What is the definition of a ulna?
Definition of ulna : the bone on the little-finger side of the human forearm also : a corresponding part of the forelimb of vertebrates above fishes. Other Words from ulna Example Sentences Learn More About ulna.
What is the function of ulna bone?
The main function of the ulna, along with the radius, is to assist with rotation. This rotation allows for the maximal function of the wrist and hand due to the increased range of motion. The sole motion of the elbow joint is flexion and extension, otherwise known as bending and straightening the arm.
What type of bone is the ulna?
long bone
The ulna is a long bone.
What is the location of the ulna bone?
forearm
The ulna is one of two bones that make up the forearm, the other being the radius. It forms the elbow joint with the humerus and also articulates with the radius both proximally and distally. It is located in the medial forearm when the arm is in the anatomical position. It is the larger of the two forearm bones.
What is ulna and radius?
The radius and the ulna constitute as the bones of the forearm. The radius is the lateral of the two bones, which makes the ulna the medial bone of the forearm. These bones are specially designed in order to enable the movements that are unique for the upper limb, such are supination and pronation.
What is ulna fracture?
What is an ulna fracture? An ulna fracture affects one of the bones of the forearm; in many cases both the ulna and radius are broken.
What is radius and ulna?
Is the ulna a long bone?
The ulna forms the skeleton of the medial part of the forearm and is a long bone, consisting of an expanded proximal end, a shaft and a head at the distal end.
What are the parts of the ulna?
Different Parts of Ulna and the Joints Formed by Them. The long bone can be divided into three parts – the proximal or upper end, shaft, and the distal or lower end.
Which is radius and ulna?
The forearm consists of two bones, the radius and the ulna, with the ulna is located on the pinky side and the radius on your thumb side.
What is the structure of ulna bone?
The ulna is a long thin bone with a small distal head that bears the styloid process, and an expanded proximal end. The proximal end terminates in the olecranon process and bears the semilunar notch on its upper surface. In man, the head of the ulna does not articulate with any of the bones of the carpus.
Which is longer ulna or radius?
The radius is often thought of as the larger of the two long bones in the forearm because it is thicker than the ulna at the wrist, but it is thinner at the elbow. The ulna is longer than the radius by about an inch in most people, but lengths vary considerably.