GENERAL HISTOLOGY

Detailed explanation-1: -In your lungs, the main airways, called bronchi, branch off into smaller and smaller passageways. The smallest airways, called bronchioles, lead to tiny air sacs called alveoli.

Detailed explanation-2: -What Are Tracheal and Bronchial Stenosis? Stenosis refers to an abnormal narrowing. Tracheal stenosis is the narrowing of the trachea, or windpipe, and bronchial stenosis is the narrowing of the bronchial tubes, which branch off the trachea into the lungs.

Detailed explanation-3: -The bronchi are the passageways that connect your windpipe to your lungs. You have two main bronchi in your right and left lungs that divide and branch off into smaller segments, like tree branches. At the end of your bronchi, the alveoli exchange oxygen and carbon dioxide.

Detailed explanation-4: -When you inhale through your nose or mouth, air travels down your pharynx (back of your throat), passes through your larynx (voice box) and into your trachea (windpipe). Your trachea is divided into two air passages called bronchial tubes. One bronchial tube leads to your left lung, the other to your right lung.