List the steps to apply bold and italic formatting to a word.

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

How does sending the test results as its written might affect the patient?

Which respiratory measurement as useful in differentiating between obstructive and restrictive pulmonary dysfunction