Skeletal System

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Across
  1. 3. (Bone Marrow): The soft, spongy tissue found in the center of many large bones. It is responsible for producing blood cells (red, white, and platelets).
  2. 5. A disease in which bones become fragile and prone to fracture due to the loss of bone tissue (decreased bone density).
  3. 6. The long bone of the upper arm, extending from the shoulder to the elbow.
  4. 9. Rigid organs that form the skeleton. They protect various organs, produce red and white blood cells (in the marrow), store minerals (like calcium), and provide a frame for muscle attachment.
  5. 12. Specialized cells responsible for forming new bone tissue (bone builders).
  6. 16. Bands of dense, fibrous, elastic connective tissue that connect bone to bone, typically reinforcing a joint.
  7. 19. The bone of the forearm on the thumb side.
  8. 20. Strong, flexible connective tissue found in many parts of the body, such as the joints, ears, and nose. In joints, it acts as a shock absorber and reduces friction.
  9. 22. (Cranium): The bony structure that protects the brain and forms the head and face.
  10. 23. The thigh bone and the longest, heaviest, and strongest bone in the human body.
  11. 24. (Articulations): Any place where two or more bones meet. They allow movement and provide mechanical support.
Down
  1. 1. The individual, irregular-shaped bones that make up the spine or vertebral column.
  2. 2. The breastbone; a long, flat bone located in the center of the chest that connects to the ribs.
  3. 4. (Vertebral Column): The main central support structure of the body, composed of 33 vertebrae. It protects the spinal cord and allows flexible movement.
  4. 7. The bone of the forearm on the side of the little finger.
  5. 8. Tough, flexible, and inelastic cords of fibrous connective tissue that connect muscle to bone, enabling the muscle to move the bone.
  6. 10. The internal framework of the body, composed of bones and cartilage, that provides support, structure, protection for internal organs, and facilitates movement.
  7. 11. The smaller, lateral (outer) bone of the lower leg.
  8. 13. The larger, medial (inner) bone of the lower leg, commonly known as the shinbone. It is the main weight-bearing bone of the lower leg.
  9. 14. The shoulder blade; a large, triangular flat bone situated in the upper back.
  10. 15. The bones that make up the fingers and toes.
  11. 17. Specialized cells responsible for breaking down old bone tissue (bone resorbers or destroyers). This is a normal part of bone remodeling.
  12. 18. The collarbone; a slender, S-shaped bone that connects the sternum (breastbone) to the scapula (shoulder blade).
  13. 19. (Thoracic Cage): The structure formed by the ribs and the sternum (breastbone) that surrounds and protects the heart and lungs.
  14. 21. The large, basin-shaped structure formed by the hip bones, sacrum, and coccyx. It connects the spine to the lower limbs and supports the weight of the upper body.