Upper Arm and Anterior Shoulder

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Across
  1. 3. The "superhero" muscle
  2. 4. Muscle deep to Pectoralis Major
  3. 5. Triangle shaped shoulder muscle
  4. 6. Muscle under the clavicle
  5. 8. The "armpit" muscle
Down
  1. 1. Superficial muscle on the anterior arm
  2. 2. Only muscle on the posterior arm
  3. 7. Superficial chest muscle antagonistic to itself