Final answer:
A bronchoscopy is a procedure in medicine used to examine the lungs. It involves inserting a fiber-optic tube through the nose, throat, larynx, and trachea to visualize different parts of the lungs and diagnose respiratory conditions.
Step-by-step explanation:
A bronchoscopy is the examination of the lungs using a fiber-optic tube called an endoscope. This tube is inserted through the nose, throat, larynx, and trachea to visualize and examine different parts of the lungs. It helps doctors diagnose and treat various respiratory conditions, such as infections, tumors, and blockages.