Où se trouve l'ulna ?
Où se trouve l'ulna ?
Le cubitus ou ulna est un os long qui forme le squelette de l'avant-bras où il est situé en dedans du radius. C'est un os bilatéral (droit et gauche) qui présente un corps ou diaphyse et deux extrémités.
What is the function of ulna?
- 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 is the common name for ulna?
- [edit on Wikidata] In human anatomy, the ulnar nerve is a nerve that runs near the ulna bone. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest unprotected nerve in the human body (meaning unprotected by muscle or bone), so injury is common.
What is the difference between radius and ulna?
- Difference Between Radius and Ulna. Ulna is slightly larger than the radius. Radius is narrow at its proximal end and wide at its distal end, whereas ulna has the opposite shape of radius. In anatomical position, radius is the lateral bone of the forearm, and ulna is medial to radius. Disc shaped head of ulna is present at the distal end,...
What is the ulna connected to?
- The ulna is attached to by muscles in the arm and forearm to perform movements of wrist, hand and the arm. The end of the ulna presents a large notch-trochlear, or the semilunar, notch – that articulates with the trochlea of the humerus (upper arm bone) to form the elbow joint.
