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Learn about the skeletal system anatomical parts including bones, joints, cartilage, and marrow. Understand its functions like support, protection, movement, mineral storage, and blood cell formation. Illustrative diagrams included. 8
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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 • Vertebrae protect spinal cord • Movement • Attachment sites for muscles and tendons • Muscles use bones as levers • Joints between allow for range of motion
…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)