when you move your pencil or pen to answer this question, the muscles in your fingers are contracting and pulling on the bones in your fingers to move the pencil or pen. They do this because motor neurons give them signals tell them to move. Which three systems are working together here?

Answer 1

The three systems working together in this scenario are:

1. Muscular System: This system contains the muscles in your fingers that contract to create movement when you write or draw. The contraction of these muscles is what enables you to grip and control the pencil or pen.

2. Skeletal System: The bones in your fingers form the framework that the muscles pull on to create movement. The skeletal system provides structure and support to the body, allowing for coordinated movement.

3. Nervous System: This system includes motor neurons that send signals from the brain to the muscles in your fingers. The nervous system is responsible for processing information and enabling voluntary movements by coordinating muscle contractions.

Together, these systems allow you to perform the action of writing or drawing with a pencil or pen.