Answer:
One
Explanation:
Sodium (Na) has one valence electron so it gets one dot.
Involuntary as the muscle is a reflex
The correct answer is this one: "A.When actin filaments are pulled toward the center of the sarcomere, the fiber shortens." The statement that accurately describes the way in which a muscle moves is when actin filaments are pulled toward the center of the sarcomere, the <span>fiber shortens</span>
