The risk of _______________, a condition in which the bones lose mass, can be reduced with physical exercise

During World War II, employers offered their employees group health insurance when wages froze

Indicate whether the statement is true or false

An obstruction of the pulmonary artery will cause:

A) backup of blood in the right side of the heart. B) increased blood flow through the aorta. C) backup of blood in the left side of the heart. D) increased blood flow through the vena cava.