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Skeletal System Notes Functions of the Skeletal System 1. 2. 3. 4. 5. Provide shape and support to body Protect internal organs Muscles attach to bones to move them Blood cells produced in marrow of bones Store minerals calcium and phosphorus for later use Bones •206 bones in adult skeleton •Each bone is an organ because it contains two or more tissues Pelvis Joints Places where bones join together in the skeleton Two types Immovable Movable Ball and socket Hinge Gliding Ligaments Tough bands of tissue that connect bones to other bones Tendon Tissues that connect muscle to bone Cartilage A smooth, flexible protein that covers the ends of bones at joints Bones form of cartilage and then harden as a child grows Structures made of cartilage Sharks are cartilaginous fish Marrow A flexible tissue found inside of bones that produces blood cells Thought Question What are the functions of the skeletal system? Shape and support Protection for organs Provide muscle attachment points Form red blood cells in bone marrow Store minerals (Ca + P) Thought Question What are the organs of the skeletal system? Bones Thought Question What are structures of the skeletal system and their functions? Joints Ligaments Tissue that connects muscle to bone Cartilage Bands of tissue that connects bone to bone Tendons Places where bones join together Smooth and flexible tissue that covers the ends of bones Marrow Tissue inside bones that produces blood cells Thought Question What cell organelle serves the same purpose as the organs of the skeletal system? Cell Wall – Plant cells Cell Membrane – Animal cells Thought Question How are bones connected to bones? By ligaments How are bones connected to muscles? By tendons Thought Question What is marrow? The tissue inside bones that produces blood cells Thought Question What structures do freshwater, marine and terrestrial organisms have for support? Exoskeleton Calcium carbonate skeletons Silica skeletons Bony skeleton Cartilaginous skeleton Thought Question What structures do birds have that provide support? Hollow bones that have braces or struts that cross the interior of the bone to provide strength Movie Them not so dry bones video