Letters sent out by a medical assistant are a direct ________ on the physician and on the medical office as a whole

________ The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body

Indicate whether the statement is true or false

Which type of pneumotachograph uses the Doppler effect to measure airflow velocity?

a. Fleisch c. Nonvortex b. Screen type d. Variable-orifice