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Hard Bones
Term | Definition |
---|---|
appendages | external body parts that stick out of the body, such as arms or legs. |
ball-and-socket joints | joints that fit together as a ball fits into a glove |
bone marrow | spongy material in the center of bones that creates blood cells |
cartilage | an elastic tissue found in humans and other vertebrates |
fused | joined together |
hinge joints | joints that open like a door |
ligaments | tissues that connect one bone to another bone |
spinal cord | a collection of nerves that are protected by vertebrae |
sutures | joints or seams between skull bones |
swivel joints | joints that can tilt or turn |
tendons | tough tissues that attach muscles to bones |
vertebrates | animals with backbones |