Organs and Organ Systems

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Across
  1. 2. a protein that converts chemical energy to mechanical energy
  2. 4. short branched extension of a nerve cell
  3. 6. sheath, greatly extended and modified plasma membrane
  4. 8. long thread-like part of a nerve cell
  5. 11. the most abundant protein in eukaryotic cells
  6. 12. external layer of covering ie. skin
  7. 14. basic rod-like organelle of a muscle cell
  8. 15. part of an organism that is typically self-contained with its own function
Down
  1. 1. a bundle of fibers connecting nerve centers
  2. 3. the basic contractile unit of a muscle cell
  3. 5. secret hormones directly into the blood
  4. 7. tissue that forms the outer layer of a body's surface
  5. 9. a subcellular structure that has one or more specific jobs to perform within the cell
  6. 10. an organism with cells in which the genetic material is DNA in the form of chromosomes
  7. 13. single-celled organism that does not have a distinct nucleus or any specialized organelles