1. If you were explaining skeletal muscle contraction to a friend who doesn't understand the concept, your explanation should include all of the following except
a. Impulses from the nervous system reach the neuromuscular junction.
b. Proteins within the muscle tissue release acetylcholine.
c. The muscle filaments slide across each other and the muscle shortens.
d. Acetylcholine binds to receptors on the muscle and begins a chemical reaction within its fibers.