Answer
The ulna and the radius are the two long bones of the forearm. At the elbow joint, the ulna articulates at several humeral surfaces: these include the trochlea, the coronoid fossa, and the olecranon fossa -- of the humerus.
Work Step by Step
The ulna is one of the two bones of the forearm. With the arms held in forelimbs held in the anatomical position The ulna will be located on the medial side of the forearm. At the elbow joint the ulna the olecranon and coronoid process articulate with the trochlea and the olecranon fossa of the humerus. notch of the ulna articulates with the trochlea of the humerus the coronoid process articulates with the coronoid fossa and the olecranon fossa of the humerus
