science

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Across
  1. 3. – a nerve cell that sends messages throughout the body
  2. 4. – the tiny fingerlike projections that line the surface of the small intestine
  3. 5. nerve – a cranial nerve that carries impulses from the retina to the brain
  4. 10. – the muscular contractions that move food through the digestive tract
  5. 11. oblongata – the lower portion of the brain stem
  6. 12. – the breastbone, located in the middle of the chest
Down
  1. 1. – the connective tissue that attaches muscle to bone
  2. 2. – the internal supporting framework of an animal or human
  3. 6. – the connective tissue that covers the ends of bones in a joint
  4. 7. – the thick liquid made of partially digested food in the stomach
  5. 8. – the microscopic air sacs found in the lungs
  6. 9. nerve – a cranial nerve that carries impulses from the inner ear to the brain
  7. 10. sphincter – the muscle that separates the stomach from the small intestine