Muscular System

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Across
  1. 4. fiber Long slender skeletal muscle cells.
  2. 5. Think filament of protein found in skeleton muscle cells.
  3. 6. Having alternating light and dark bands under the microscope.
  4. 8. Any of several muscles having three points of attachment at one end.
  5. 11. terminal Neurotransmitters are released from axon terminal.
  6. 12. Neurotransmitter that produces an impulse in a muscle cell.
  7. 13. During a muscle contraction, myosi filaments form cross bridges with actin filaments.
Down
  1. 1. junction The point of contact between a motor neuron and a skeletal muscle cell.
  2. 2. Tightly packed filament bundles found within skeletal muscle fibers.
  3. 3. Any of several muscles having two points of attachment at one end.
  4. 7. Thin filament of protein found in muscles.
  5. 9. Unit of muscle contraction; composed of two Z lines and the filaments between them.
  6. 10. Tough connective tissue that connects skeletal muscles to bones.