Question

HELP ME PLEASE!!!! answer the ones you know

What happens when each muscle contracts? Ex. Biceps = bends arm at the elbow
1) Deltoids =
2) Latissimus Dorsi =
3) Pectoralis Major =
4) Trapezius/Rhomboids =
5) Rectus Abdominis =
6) Erector Spinae =

Answer 1

For example, the biceps muscle, in the front of the upper arm, is a flexor, and the triceps, at the back of the upper arm, is an extensor. When you bend at your elbow, the biceps contracts. Then the biceps relaxes and the triceps contracts to straighten the elbow.