1. Long bone located in the upper arm, extending from the shoulder to the elbow.
2. Consists of a proximal end (shoulder side) with a rounded head that articulates with the scapula and a distal end (elbow side) with two articulating surfaces for the radius and ulna.
3. Has a shaft that is relatively straight but curved slightly inward toward the body's midline.
4. Contains a nutrient foramen, which allows blood vessels to penetrate the bone for nourishment.
5. The greater and lesser tubercles are prominent bony projections located on the proximal end for muscle attachment.
6. The deltoid tuberosity is a roughened area on the shaft where the deltoid muscle attaches.
7. The medial and lateral epicondyles are bony projections on the distal end that provide attachment points for ligaments and tendons.
8. The olecranon fossa, located on the posterior aspect of the distal end, accommodates the olecranon process of the ulna during elbow extension.
9. Articulates with the scapula, radius, and ulna to form the elbow joint, allowing for flexion, extension, and rotation of the forearm.
10. Plays a crucial role in upper limb movements and stability.
Features of humerus
1 answer
1 answer