Human Body Systems

1234567
Across
  1. 2. Mouth, esophagus, stomach
  2. 4. Heart, blood, vessels
  3. 6. Nose, trachea, lungs
  4. 7. Muscles
Down
  1. 1. Bones
  2. 3. Bladder, kidneys, small and large intestine
  3. 5. Nerves, spinal cord, brain