Muscular System

4. how many muscle groups make up the hamstrings
5. muscle located on the back of the upper arm
8. the chief muscle of the calf of the leg, which flexes the knee and foot
10. large triangular-shaped muscle that gives the shoulder its rounded contour
13. type of contraction where the muscle lengthens
14. system composed of over 200 muscles
17. dorsi a thin, wide, triangular-shaped muscle located at each side of the back, under each arm responsible for exercises like pull-ups, chin-ups, and lat pull downs.
18. smallest muscle in your body is located in the ______.

1. muscles that run down the back of the thigh
2. muscle located on the front of the upper arm
3. oblique muscle that covers the side of the abdominals
6. type of contraction where the muscle shortens
7. group of muscles at the front of your thigh
9. large triangular muscles extending over the back of the neck and shoulders
11. any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder
12. skeletal muscle attach to bones by ___________.
15. how many muscle groups make up the quadriceps
16. largest muscle in the body