it is the bronchi
The trachea is part of the respiratory system because it is part of the process of breathing. The trachea is part of the airway between the nose and the lungs. It is what helps transport the oxygen to the lungs.
The throat is part of the vocal tract used in the production in speech.
Primary brochi first enter the lungs on both the left and right sides.
The term "bronchial" is an adjective used to describe things associated with bronchi/bronchioles, which are either or both of the tubes that branches off the trachea/windpipe and extend into the lungs.
The esophagus and trachea open into the throat and mouth.
The esophagus and trachea both branch off of the pharynx, which is the common pathway for air and food. The esophagus carries food from the mouth to the stomach, while the trachea carries air from the mouth and nose to the lungs.
The esophagus is right behind the trachea, in line with it. In anatomical terms, both are located medially; neither is lateral to the other. The esophagus is dorsal or posterior to the trachea. The trachea is anterior or ventral to the esophagus.
The trachea, which starts below the larynx and branches into both lungs, is sometimes called the windpipe. It's part of the respiratory system and also helps remove any debris that may have made it past the hairs of the nose.
Your trachea, mouth and nose allow air to enter your body. They both filter the air. The nose filters the air by the cilia, and the mouth by mucus. Those help because they catch the dirt from the air and prevent it from going into your lungs. The air gets warmed by your nasal cavity into the trachea. Your epiglottis stops air going into your stomach. Your lungs are near your heart, and after air goes through your trachea, it goes in your bronchial tubes, which let air into your lungs Your bronchial tubes branch through your lungs. Alveoli are the little air sacs at the end of your bronchial tubes where air enters.
The trachea contains cartilage rings and mucous glands. The bronchioles contain no cartilage and no mucous glands. Bronchioles contain Clara cells (that the trachea does not). Respiratory bronchioles contain alveoli, which are very thin-walled blind ending sacs where gas exchange occurs - these are not present in the trachea.
Air and food can both travel through the pharynx. It serves as a passage for air to reach the lungs through the trachea and for food to reach the esophagus on its way to the stomach.
the epiglottis prevent food to the trachea