Which of the following is the thickest layer of the heart, which is made up of muscle? 

________ A licensed medical assistant can perform the same duties as a licensed nurse

Indicate whether the statement is true or false

A 5-year-old boy has fallen and has a severe deformity of the forearm near the wrist. He has possibly sustained a fracture of the:

A. proximal forearm. B. superior forearm. C. dorsal forearm. D. distal forearm.