Chapter 13, Support & Movement, 13D

123456789
Across
  1. 1. skeletal muscles often work in _____
  2. 7. contracting muscles help keep body at a constant temperature
  3. 8. process that allows muscles to get enough oxygen when there is not enough in the bloodstream
  4. 9. muscle not controlled at will
Down
  1. 2. contracting muscles that pull on bones, push food, and pump blood
  2. 3. striped voluntary muscle in skeletal muscles
  3. 4. involuntary muscle as in the nervous system and digestive organs
  4. 5. muscle controlled at will
  5. 6. involuntary and striated muscle of the heart