Across
- 2. Muscle sub-group: produces movement, helps sustain posture, helps stabilize joints.
- 3. Muscles that contract or move without conscious control.
- 4. Skeletal muscles that contract and relax under conscious control.
- 6. Tissue that connects muscle to the bone
- 7. Muscle sub-group: makes up the middle, thick layer of the heart. Helps make the heart contract and pump blood.
Down
- 1. The tightening, shortening, or lengthening of muscles during an activity.
- 2. Muscle sub-group: found in the walls of hollow internal organs, cannot be controlled and acts involuntarily.
- 5. Chemical your body produces when your cells break down carbohydrates for energy. Responsible for muscle fatigue.