Certified Medical Assistant Practice Exam

Spirometry is the procedure that specifically measures the amount of air moving into and out of the lungs, making it essential for assessing lung function. This test provides vital information about the respiratory system, including the volume of air inhaled and exhaled, and is commonly used in the diagnosis of conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other respiratory disorders.

The other options are related to different medical assessments. Colonoscopy involves examining the interior of the colon and is utilized primarily for colorectal cancer screening or for diagnosing gastrointestinal issues. Endoscopy refers to a broader range of procedures used to examine the internal structures of the body, commonly via the gastrointestinal tract, using a flexible tube with a camera. A biopsy is a procedure to remove tissue samples for diagnostic purposes, often to determine if cancer or other conditions are present. These procedures do not involve measuring respiratory function.