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Jenna's pencil fell off of her desk and she quickly reached down to catch it before it hit the ground. In this process, the system first recognized the falling pencil. It sent signals to the system, which then moved the components of the system in order to catch the pencil.

Respuesta :

SociometricStar

1 Muscular System

2 Nervous System

3 Skeletal System

The muscular system first recognises  the falling pencil then just  after this the muscular system sends signals to the nervous system ,then the brain sends the signals to the Skeletal System to pick up the pencil before it reaches the ground.

1. nervous

2. muscular

3. skeletal

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