A) Muscular and Excretory systems
B) Digestive and Nervous systems
C) Muscular and Skeletal systems
D) Skeletal and Reproductive systems
Correct Answer: C
Solution :
In bending and straightening of the arms, both muscles (muscular system) and bones (skeletal system) are involved. These two systems work in close co-ordination and cause all the body movements.You need to login to perform this action.
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