Coronoid fossa of the humerus
Encyclopedia
Superior to the anterior portion of the trochlea
is a small depression, the coronoid fossa, which receives the coronoid process of the ulna
during flexion
of the forearm
. It is directly adjacent to the Radial fossia of the Humerus.
Trochlea of humerus
The medial portion of the articular surface of the humerus is named the trochlea, and presents a deep depression between two well-marked borders; it is convex from before backward, concave from side to side, and occupies the anterior, lower, and posterior parts of the extremity...
is a small depression, the coronoid fossa, which receives the coronoid process of the ulna
Coronoid process of the ulna
The coronoid process is a triangular eminence projecting forward from the upper and front part of the ulna.Its base is continuous with the body of the bone, and of considerable strength....
during flexion
Flexion
In anatomy, flexion is a position that is made possible by the joint angle decreasing. The skeletal and muscular systems work together to move the joint into a "flexed" position. For example the elbow is flexed when the hand is brought closer to the shoulder...
of the forearm
Forearm
-See also:*Forearm flexors*Forearm muscles...
. It is directly adjacent to the Radial fossia of the Humerus.