Human Body Systems Vocab

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Across
  1. 4. A rod-like organelle of a muscle cell.
  2. 5. Arteries that stem off of the aorta and deliver blood to the heart.
  3. 7. The first part of the small intestine, which turns partially digested food into nutrients.
  4. 8. A substance formed by the breakdown of protein in the liver.
  5. 11. Large artery that delivers oxygen-rich blood to your body.
  6. 13. The upper chambers of the heart.
  7. 14. A flap that covers the larynx when swallowing to prevent fluids from leaking in.
  8. 17. When certain filtered substances are absorbed back into the bloodstream.
  9. 18. A hairlike structure on the surface of cells.
  10. 19. Highly sensitive connective tissue between muscles and bones.
Down
  1. 1. Artery that takes blood from the heart to the kidneys.
  2. 2. Junction between two nerve cells.
  3. 3. Dome shaped muscle that inflates and deflates lungs.
  4. 6. Exchange of gas between alveoli and external environment.
  5. 9. Muscle group that runs along the spine.
  6. 10. A neuron that transmits impulses between other neurons.
  7. 12. Connective tissue of the nervous system.
  8. 13. Organ that supports the immune system.
  9. 15. A membrane that envelopes the lungs and covers the thorax.
  10. 16. A process that supports failing kidneys.