Ulna

/ˈʌlnɐ/

/ˈʌlnə/

[noun]

Ulna

[NOUN]

(anatomy) the thinner and longer bone of the human forearm extending from the elbow to the wrist

synonyms : elbow bone

What is "ulna"?

The ulna is one of the two bones in the forearm, alongside the radius. The ulna runs parallel to the radius on the inner side of the forearm and is slightly longer. It plays a vital role in forearm rotation and stability. The ulna forms the bony prominence of the elbow and serves as an attachment point for muscles involved in forearm movement and wrist control. It works in conjunction with the radius to allow for various movements of the forearm, such as flexion and extension. The ulna's structure and articulations contribute to the overall functionality and strength of the forearm and upper limb.

Examples

1. The ulna stays relatively still.

2. Yeah, the ulna is more of a wrench than the epicondyles.

3. Follow the ulna down the arm to the wrist.

4. The ulna will always be on the same side as the pinky.