True or false: muscle physiology

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Skeletal muscle fibers are multinucleated.

2. Statement is true

   No

   Statement

   Cardiac muscle fibers are not connected to their neighbours.

3. Statement is true

   Yes

   Statement

   Smooth muscle regulates cross-bridges with calmodulin instead of troponin.

4. Statement is true

   No

   Statement

   Rigor mortis is caused by an excess of ATP in the muscle.

5. Statement is true

   Yes

   Statement

   Creatine phosphate can power only about the first 15 seconds of contraction.

6. Statement is true

   No

   Statement

   Fast glycolytic (FG) fibers are the most fatigue-resistant fiber type.

Instructions

Swipe or tap true or false for each statement.