NEET BIOLOGY

Detailed explanation-1: -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-2: -The trachea divides at the sternal angle into right and left primary bronchus which goes into the right and left lungs. Each bronchus enters the lung at a notch called the hilum. Blood vessels and nerves also connect with the lungs here and together with the bronchus forms a region called the root of the lungs.

Detailed explanation-3: -At the front they extend from just above the collarbone (clavicle) at the top of the chest to about the sixth rib down. At the back of the chest the lungs finish around the tenth rib. The protective linings which cover the lungs (pleura) continue down to the twelfth rib.

Detailed explanation-4: -The left lung consist of two lobes and is longer and narrower than the right lung. The left lung has a concave region on the mediastinal surface called the cardiac notch that allows space for the heart. There is a cavity, called the pleural cavity, between the parietal and visceral layers of the pleura.