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Which muscle runs down the front of the abdomen and is used when doing crunches (also known as the six-pack abs)?
A. rectus femoris
B. quadraceps femoris
C. rectus abdominis
D. gluteus maximus

Respuesta :

C) the recurs abdominis

c. rectus abdominis is the muscle that runs down the front of the abdomen and used when doing crunches.

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