Question

multiple choice question
a joint in which one bone with a convex surface fits into another bone with a concave depression is a ______ joint.
condylar
plane
hinge
pivot
saddle

Explanation:

A hinge joint is a type of synovial joint in which one bone with a convex surface fits into another bone with a concave depression, allowing movement primarily in one plane (flexion and extension). Condylar joints have an oval - shaped condyle fitting into an elliptical cavity. Plane joints have flat or nearly flat articulating surfaces. Pivot joints involve a rounded end of one bone fitting into a ring - like structure of another. Saddle joints have a saddle - shaped surface on one bone fitting into a complementary saddle - shaped surface on the other.

Answer:

C. hinge