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Topic: Skeletal System Aim: How does the skeletal system help us survive? Do Now: What is the name for a group of tissues working together to perform a function? Topic: Skeletal System Aim: What are tissues? How many different tissues are in our body? Do Now: Take your quiz. Review: How is the body organized? • Cells Tissues Organs Organ Systems Organism • Cells: smallest unit of structure and function in living things • Tissues: similar cells performing one function • Organs: group of tissues performing a function • Organ Systems: group of organs performing a function • Together, each level makes up an organism What are the different types of tissues? 1. Muscle tissue: only kind of tissue in your body that can contract or shorten 2. Nerve tissue: carries messages back and forth between the brain and other parts of the body 3. Connective tissue: supports and connects the body and its parts – Examples: bone (solid) and blood (liquid) 4. Epithelial tissue: covers and protects surfaces inside and outside the body What are our organ systems? • • • • • • • • • • Respiratory Excretory Immune Muscular Respiratory Endocrine Reproductive Nervous Digestive Circulatory Skeletal Nervous Skeletal Immune Excretory Muscular Organ Systems Endocrine Circulatory Digestive Reproductive What are the functions of the skeletal system? 1. 2. 3. 4. 5. Provides shape and support Allows for movement Protects organs and tissues Produces blood cells Stores minerals Topic: Skeletal System Aim: What are joints? Do Now: Where are blood cells made? Topic: Skeletal System Aim: What are bones? Do Now: List the four types of tissue found in our bodies and give an example of each. What makes up the skeletal system? 1. 2. 3. 4. Bones Cartilage Ligaments Tendons What are bones? • Made up of 2 minerals, phosphorus and calcium, that provide strength • Marrow is found inside of the bone and produces blood cells • Nerves and blood vessels are found in the canals What is osteoporosis? • Bones become weak and break easily What is cartilage? • Flexible connective tissue • Provides protection, support, and cushioning • Can be found in nose, ears, ends of bones, and between vertebrae What is a ligament? • Connects bone to bone What is a tendon? • Connects muscle to bone What is a joint? • Where 2 bones meet • Two types of joints: 1. Immovable – allows NO movement – Example: skull 2. Movable – allows movement – Example: elbow Immovable Joint - Skull What are the four types of movable joints? 1. Ball and Socket: allows for circular motion • Examples: hip and shoulder • Example: neck 2. Pivot: one bone rotates around another; allows side to side or up and down motions What are the four types of movable joints? 3. Hinge: “door hinges” allow forward and backward motions • Examples: elbow and knee 4. Gliding: allows one bone to slide over another • Examples: ankle and wrist Joints in Motion • http://www.bbc.co.uk/science/humanbo dy/body/factfiles/joints/spine_joints.s html Topic: Skeletal System Aim: How can we diagnose bone injuries? Do Now: Fill in #s 1-4 on the chart: The Skeletal System Part Bone 2. 3. Tendon Cartilage Ligament Function 1. Makes blood cells Connects muscles to bones Flexible connective tissue found at the ends of bones and used as cushioning 4. Connects bone to bone