Final answer:
The term that is not a functional classification of muscle is c. Protagonist. An agonist is assisted by a synergist, and the three main types of muscle tissue share excitability and the need for ATP.
Step-by-step explanation:
The correct answer to the student's question is c. Protagonist. The functional classifications of muscle include agonist (prime mover), antagonist, synergist (helps the agonist), and fixator (stabilizes the origin of the agonist muscle). A protagonist is not a functional classification of muscle in any biological or anatomical context.
Regarding the second question provided, which helps an agonist work, the answer is a. synergist. Synergists assist the agonists in performing their action, and fixators stabilize the muscles' origin, allowing the agonist to function effectively.
Finally, from the review questions, the answer to which of the following is not a type of tissue is c. embryonic, since embryonic suggests a developmental stage rather than a tissue type. The three main types of muscle tissue are skeletal, cardiac, and smooth, and all three require ATP and have the property of excitability.