<prompt> 8,9 10th ribs are attached to 7th rib by which jointFibrousSynol1st cailagenous2nd cailaginous  <response>: Aicular surface of the seventh to tenth ribs are flat, permitting up and down gliding movements or bucket-handle movements of lower ribs B D CHAURASIA;S HUMAN ANATOMY UPPER LIMB THORAX, VOLUME -1 SIXTH EDITION Page no:209,201 