Answer:Flexible: The skeletal system of mammals and other vertebrates is broadly divisible functionally into axial and appendicular portions. The axial skeleton consists of the braincase (cranium) and the backbone and ribs, and it serves primarily to protect the central nervous system.The endoskeleton is jointed which allows for flexible movement and support. Muscle attachment: The muscles attach directly to the skeletal bones to allow for movement and support. Protection: The endoskeleton protects the vital organs such as the heart and lungs which are protected by the ribcage.
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