33. What happens to the Z discs during muscle contraction?

Name this piece of equipment. No abbreviations.

41. What prevents unwanted muscle contractions by inhibiting motor neurons?

31. What is the smallest functional contractile unit of a muscle fiber?

17. The muscles of facial expression are primarily innervated by which cranial nerve?

44. Which structure in a muscle fiber acts as an infolding of the sarcolemma to conduct electrical signals?

32. Which of the following structures links actin filaments to the connective tissue around the muscle?

4. What role do skeletal muscles play in glycemic control?

12. How do some anatomists prefer to describe muscle attachments, instead of using the terms “origin” and “insertion”?

10. What is the defining characteristic of a direct (fleshy) attachment to bone?