When the humerus moves in the glenoid fossa, the moving joint surfaces are convex on concave.
What is Glenoid fossa?
This is a bone depression in which the head of the humerus fits into to aid movement and support.
The moving joint surfaces are convex on concave in structure when humerus moves in the glenoid fossa.
Read more about Humerus here https://brainly.com/question/7194643
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