Muscular System

3. increase the angles between bones
5. "voluntary muscle" is anchored by tendons (or by aponeuroses at a few places) to bone and is used to effect skeletal movement such as locomotion and in maintaining posture.
7. hardest-working muscle in the body.
9. "involuntary muscle" is found within the walls of organs and structures such as the esophagus, stomach, intestines, bronchi, uterus, urethra, urinary bladder, blood vessels, and the arrector pili in the skin (in which it controls erection of body hair).
11. tightening, shortening, or lengthening of muscles when you do some activity
12. refers to moving your limbs closer to the midline.
15. basic contractile unit of muscle fiber.
16. "involuntary muscle" akin in structure to skeletal muscle, and is found only in the heart.
19. muscular layer of the heart.
20. muscles that increase the angles between bones

1. the act or process of moving
2. the strongest muscle by weight
4. muscles that decrease the angle between bones
5. The quality, state, or degree of being stable
6. the act of moving from place to place. (Walking, swimming, and flying)
8. decreases the angle between the bones
10. muscle contractions that move food through the digestive tract.
13. smallest muscles in the body alongside the smallest bones
14. a muscle that contracts a cavity or orifice or compresses an organ.
17. limbs are moved away from your body's midline
18. band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body.