What is the anatomical term for ulna?
The ulna (pl. ulnae or ulnas) is a long bone found in the forearm that stretches from the elbow to the smallest finger, and when in anatomical position, is found on the medial side of the forearm. It runs parallel to the radius, the other long bone in the forearm….
| Ulna | |
|---|---|
| TA2 | 1230 |
| FMA | 23466 |
| Anatomical terms of bone |
What are the parts of the ulna?
Proximal ulna
- Olecranon. This is a large, curved bony prominence which is accepted into the olecranon fossa, located on the humerus, during elbow extension.
- Coronoid process. The coronoid process is a horizontal, bony projection which attaches directly onto the ulnar shaft.
- Head of the ulna.
- Styloid process.
What is the end of the ulna called?
The ulna (Figs. 5.4 and 5.5) has a thick proximal end with distinct processes. The olecranon process is the large, blunt, proximal tip of the ulna. The rough posterior surface of the olecranon process is the distal attachment for the triceps muscles.
What does ulna stand for?
ULNA
| Acronym | Definition |
|---|---|
| ULNA | Ultra Low Noise Adapter |
| ULNA | Ultra Low Noise Adapter (computer hardware) |
Where is the ulna in body?
forearm
ulna, inner of two bones of the forearm when viewed with the palm facing forward. (The other, shorter bone of the forearm is the radius.)
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 sigmoid notch?
The sigmoid notch is a narrow, oblong, articular depression on the lateral side of the coronoid process. This bone is the stable unit of the forearm and supports the loads conveyed from the radius and carpus. The head of the ulna serves as the articular surface for the sigmoid notch around which the radius rotates.
What is the main function of ulna?
What is the ulna function?
Is the ulna anterior or posterior?
From a posterior aspect, the ulna is rounded and smooth and can be palpated subcutaneously for the entire length of the antebrachial region. Just below the coronoid process at the highest point of the shaft, the ulnar tuberosity forms the muscular attachment of the brachialis muscle.
What is proximal ulna?
The proximal ulna consists of the olecranon process posteriorly and the coronoid process anteriorly. The articulating surface of the proximal ulna is covered with cartilage, except for a bare area that separates the olecranon from the coronoid.