Muscle and skeletal system

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Across
  1. 4. The smaller bone in the lower leg, next to the tibia
  2. 5. Large muscle in the lower leg that helps you push off the ground when you walk or jump
  3. 6. Muscles on the back of the upper arm, responsible for straightening the elbow
  4. 7. Large muscles on the upper chest, often targeted in weightlifting
  5. 9. Shoulder muscles that help lift your arms
  6. 11. back muscles that help with arm movement and twisting
  7. 13. The bony structure that protects the brain
  8. 16. Upper arm muscles known for their prominence when flexed
  9. 17. The larger bone in the lower leg, also known as the shinbone
  10. 19. Curved bones that protect the organs in the chest
Down
  1. 1. The bone that connects the arm to the body, also known as the collarbone
  2. 2. The series of bones that support the body and protect the spinal cord
  3. 3. Muscles at the back of the thigh that help bend the knee
  4. 8. The flat bone in the center of the chest that protects the heart
  5. 10. The bone in the forearm on the side of the thumb
  6. 12. The large, upper part of the hip bone
  7. 14. Muscles on the sides of the torso, important for twisting and bending
  8. 15. Tendon at the back of the ankle, named after a Greek hero
  9. 18. The longest bone in the body, located in the thigh