What's in your body?

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Across
  1. 4. Maintaining health through personal cleanliness.
  2. 6. The line of bones down the center of your back that supports your body and encapsulates the spinal cord.
  3. 8. Being capable of spreading a disease from one person to another.
Down
  1. 1. A sign indicating a disease or disorder.
  2. 2. Body temperature which is higher than usual.
  3. 3. A group of tissues that work together to do a certain job. This could be your heart, intestines, or lungs.
  4. 5. The large muscle located on the front of the upper arm between the shoulder and the elbow.
  5. 7. The muscle located on the back of your legs between your knees and your ankles.