No, the coronoid fossa is on the lateral and anterior aspect of the humerus. It receives the coronoid process of the ulna during flexion of the elbow.
The depression in the scapula can be either one of four different structures; the supraspinatus fossa, the infraspinatus fossa, the subscapular fossa, or the glenoid fossa. The problem is that none of these articulate with the ulna. The bone you are probably looking for is the humerus, and it articulates with the last one I mentioned, the glenoid fossa.
Olecranon fossa receives when extended Coronoid fossa receives it when flexed
olecranon fossa
The bone that contains the olecranon fossa is the humerus, which is located in the upper arm. The olecranon fossa is a depression on the posterior side of the humerus that accommodates the olecranon process of the ulna when the arm is extended.
The brachialis muscle originates on the distal anterior humerus and insert at the coronoid process. The function of the brachialis is flexion at the elbow.
Trochlear notch
olecranon fossa
The glenoid fossa of the scapula articulates with the head of the humerus, forming the shoulder joint. It is a shallow, cup-shaped socket that allows for a wide range of motion in the shoulder joint.
The olecranon fossa of the humerus articulates with the olecranon process of the ulna when the elbow is extended. This forms the back part of the elbow joint.
The head of the humerus faces medially, while the olecranon fossa is posterior.
The olecranon fossa is a depression in the humerus bone of the upper arm, and it is specifically designed to accommodate the olecranon process of the ulna bone. The olecranon is a prominent bony projection at the end of the ulna that forms the bony part of the elbow.