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?

18. What is the name of the aponeurosis that connects the frontal and occipital bellies of the occipitofrontalis muscle?

20. Which muscle encircles the eye and functions as a sphincter to close the eyelid?

43. Which molecule provides oxygen needed for muscle activity?

7. What determines the strength of a muscle and the direction of its pull?

16. Which of the following is true about muscles of facial expression?