Give 3 important uses a skeleton has for animal bodies , Skeletons support and give shape to the body. They also protect the soft organs of the body. , Fill in the missing words. the skeletons of vertebrates are made of _ and _., bone and cartilage, If a bone is broken in your body, it can heal itself. Explain how this is possible. , Bones are living. They can grow and heal. , What is a frame Structure?, Framework of struts that are jointed in triangular shapes., Why is the skeleton a frame structure?, Bones are strong, hard and rigid. Bones form a frame structure around which the rest of the body is built., Why is the ribcage important for the vital organs?, The ribcage protects the vital organs. the skeleton can break or get hurt but the heart and lungs will be protected., Why is the backbone important for the skeleton, The backbone is made of vertebrae. The spinal cord runs through the vertebrae. The spinal cord sends signals from brain to parts of the body. The spinal cord is protected by the vertebrae. , Why do bones need calcium?, Bones need to be strong to support the vertebrate's weight. Calcium and other minerals inside the bones make bones very hard and strong. , What is the definition of muscles?, Masses of tough elastic tissue that pull our bones when we move., What is the definiiton of tendons?, Tough cords that attach muscles to bones., What is the definition of ligaments?, Bands that connect bone to bone and strengthen the joint., Give 3 characteristics all skeletons have., 1. They all have bones. Skeletons are inside their bodies. All skeletons have backbones., How are backbones of all the skeletons different. , Some animals have different size and number of vertebrae., Describe 2 ways that a bird's body is suitable for flight., Birds have hollow bones that are lighter and better suited for flight. Birds have feathers that are also light and suitable for flight. .

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