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SKELETAL SYSTEM

Learn about the skeletal system's importance, its major functions, and the bones in the leg, arm, shoulder girdle, ribs, and vertebral column. Enhance your knowledge of strength and conditioning.

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SKELETAL SYSTEM

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  1. SKELETAL SYSTEM Intro to Strength & Conditioning

  2. The Skeletal System • The Skeleton is the name given to the collection of bones that holds the rest of our body up. Our skeleton is very important to us. It does three major jobs. • It protects our vital organs such as the brain, the heart and the lungs. • It gives us the shape that we have. Without our skeleton, we would just be a blob of blood and tissue on the floor. • It allows us to move. Because our muscles are attached to our bones, when our muscles move, they move the bones, and we move. • When you were born, your skeleton had around 350 bones. By the time you become an adult, you will only have around 206 bones. This is because, as you grow, some of the bones join together to form one bone.

  3. Label Diagram

  4. BONES IN LEG • FEMUR • Upper thigh • Largest bone in body • Strongest bone in body • PATELLA • Known as the Knee Cap • Classified as a floating bone

  5. BONE IN LEG • FIBULA • Known as the shin • Found on the lateral side of the lower leg • Serves as an area for muscle attachment • TIBIA • Known as the shin • Found on the medial side of lower leg • Connects the femur to form the knee joint and the ankle • Larger than the fibula – bears most of the weight

  6. BONES IN THE ARM • HUMERUS • Connects the shoulder and elbow • Largest bone in the upper extremity

  7. BONES IN THE ARM • RADIUS • Makes up the forearm • Located on the lateral side • Contributes more to the movement of the wrist and hand • ULNA • Makes up the forearm • Located on the medial side • Longer than the radius and connects firmly to the Humerus

  8. THE SHOULDER GIRDLE • CLAVICLE • Known as collar bone • It is a S-shaped bone • Connects the upper arm to trunk of body • Holds the shoulder joint together

  9. THE SHOULDER GIRDLE • SCAPULA • Known as the shoulder blade • A large, triangular, flat bone found on the back side of the rib cage • Serves as an attachment for many muscles

  10. RIBS • RIBS • Are thin, flat, curved bones • They serve as a protective cage around the organs in the upper body • Comprised of 24 bones, arranged in 12 pairs

  11. THE VERTEBRAL COLUMN • VERTEBRA • Called the backbone • Consist of a series of 33 irregularly shaped bones, called vertebra • Divided into 5 categories depending on where they are located • Protects the spinal cord

  12. CERVICAL VERTEBRAE • CERVICAL • The first seven vertebra • Found at the top of Spinal Column • Flexible framework for neck and support the head • Allow head to nod “yes” and “no”

  13. THORACIC VERTEBRA • THORACIC • Are the next 12 • Move with the ribs • Larger than the cervical vertebra • Increase in size from the top to the bottom

  14. LUMBAR VERTEBRAE • LUMBAR • Consist of 5 bones • They are the largest of all vertebrae • Support most of the body’s weight • Are attached to many of the backs muscles

  15. SACRUM • SACRUM • A triangular bone • Located just below the Lumbar vertebrae • Attaches to the Pelvic Girdle and moves with it

  16. COCCYX • COCCYX • Known as the tailbone • Very bottom of Spinal Column

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