Skeletal Muscle

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Across
  1. 1. what is the connective tissue that surrounds the entire muscle
  2. 2. known as the thin filament
  3. 4. up to how long can a muscle cell be
  4. 5. what ion is released from the sarcoplasmic reticulum to initiate contractions
  5. 7. what protein blocks myosin binding sites during a muscles resting phase
  6. 8. during contraction sarcomeres____
Down
  1. 1. the layer of connective tissue that surrounds each muscle fibre
  2. 3. what molecule controls tropomyosin
  3. 6. known as the thick filament