A marathon runner’s leg muscles contain a high percentage of which muscle fiber type?

Which of the following muscles elevates the corners of the mouth in smiling?

Which of the following would possess fast Myosin ATPase?

Myasthenia Gravis is an autoimmune disorder in which antibodies destroy acetylcholine (ACh) receptors at the neuromuscular junction, reducing receptor availability for ACh binding. Which therapeutic strategy would most effectively enhance muscle contraction in affected individuals?

During inspiration, which of the following contract to increase the volume of the thoracic cavity?

In the sarcomere, which of the myofilaments binds calcium to regulate the potential for cross-bridge formation?

In visceral organs, what is the complex that regulates smooth muscle contraction?

Thapsigargin is a potent calcium ATPase pump inhibitor. What state of the muscle contraction would most greatly be affected immediately?

Which of the following catalyzed substrate-level phosphorylation of ADP from the storage molecule creatine phosphate?

Which of the following was NOT a condition that would qualify someone for sterilization under the Nazi program?