The ____________________ is the most common portal of entry into the body for pesticides and other chemicals

What type of muscles control the size of the bronchioles in the lungs?

A) Voluntary B) Smooth C) Skeletal D) Striated

Based on current guidelines, in which of the following situations should supplemental oxygen be administered?

a. Signs of myocardial infarction and an oxygen saturation of 97% b. Any elderly patient whose oxygen saturation is less than 95% c. Any diabetic patient whose oxygen saturation is less than 98% d. Exposure to carbon monoxide and an oxygen saturation of 95%