ANATOMY

Detailed explanation-1: -The main organ of the respiratory system is the lungs. Other respiratory organs include the nose, the trachea and the breathing muscles (the diaphragm and the intercostal muscles).

Detailed explanation-2: -Where is the trachea located? Your trachea sits in your lower neck and upper chest, below your larynx. It is behind the notch at your lower throat, between the inside edges of your collarbones. In a diagram of your trachea and other respiratory organs, you can see the trachea between the top lobes of the lungs.

Detailed explanation-3: -The airway that leads from the larynx (voice box) to the bronchi (large airways that lead to the lungs). Also called windpipe.

Detailed explanation-4: -(iv) Tube B-Bronchi Trachea branches into two bronchi to facilitate the gaseous exchange in the two lungs. One bronchus reaches each lung. Thus, pipe B represents bronchi.