Across
- 2. Lungs, Trachea, Bronchi
- 7. Skin, Hair, Nails
- 8. Stomach, Mouth, Intestines
- 9. Kidneys, Bladder
- 10. Muscles
- 11. Brain, Spinal Cord
Down
- 1. Heart, Blood, Arteries, Veins
- 3. Pituitary, Thyroid, Adrenals
- 4. Thymus, Bone Marrow, Lymph nodes
- 5. Bones
- 6. Testes, Ovaries, Uterus