2. Condylar (ellipsoid) Joint Observe the condylar joint between a metacarpal and proximal phalanx in figure 10.4. Now observe this joint on an articulated skeleton. Notice the shape of the two articulating bones. The bone with the convex oval surface is the and the bone with the elliptical concavity is the wolley 3. Hinge Joint-Observe the hinge joint between the humerus and ulna in figure 10.4. Now observe this joint on an articulated skeleton. The bone with the convex oval surface is the and the bone with the concave surface is the 4. Pivot Joint Observe the pivot joint between the dens of the axis and the atlas in figure 10.4. Now atniol, leivony? Vara observe this joint on an articulated skeleton. The bone with the round surface is the and the bone with the "ring" is the 5. Plane Joint-Observe the plane joint between two carpal bones in figure 10.4. Now observe this joint on an articulated skeleton. What other joints in the foot are plane joints? 6. Saddle Joint Observe the saddle joint at the base of the thumb in figure 10.4. Now observe this joint on an articulated skeleton. The two bones that have both a concave and a convex surface are the and