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Unit 4: Skeletal System

Basic Anatomy & Function. Unit 4: Skeletal System. Anatomical Parts. Bones Joints Cartilage Marrow. Function. Support Framework for posture Limbs act as pillars Rib cage supports thoracic wall Protection Ribs protect lungs and heart Skull protects brain

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Unit 4: Skeletal System

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  1. Basic Anatomy & Function Unit 4: Skeletal System

  2. Anatomical Parts • Bones • Joints • Cartilage • Marrow

  3. Function • Support • Framework for posture • Limbs act as pillars • Rib cage supports thoracic wall • Protection • Ribs protect lungs and heart • Skull protects brain • Vertebrae protect spinal cord • Movement • Attachment sites for muscles and tendons • Muscles use bones as levers • Joints between allow for range of motion

  4. …Function Cont’d… 4. Mineral & Growth Factor Storage • Reservoir for calcium and phosphate • Releases minerals into blood • Growth factors (insulin, transforming factor, morphogenic proteins) in bone 5. Blood Cell Formation • Marrow within cavities of bones (primarily long) • Marrow initiates hematopoeisis (blood cell formation)

  5. Diagram Time!

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