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A bronchus (/ ˈ b r ɒ ŋ k ə s / BRONG-kəs; pl.: bronchi, / ˈ b r ɒ ŋ k aɪ / BRONG-ky) is a passage or airway in the lower respiratory tract that conducts air into the lungs.The first or primary bronchi to branch from the trachea at the carina are the right main bronchus and the left main bronchus.
The trachea (pl.: tracheae or tracheas), also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all animals lungs. The trachea extends from the larynx and branches into the two primary bronchi.
The most common tracheal injury is a tear near the carina or in the membranous wall of the trachea. [15] In blunt chest trauma, TBI occurs within 2.5 cm of the carina 40–80% of the time. [ 2 ] The injury is more common in the right main bronchus than the left, possibly because the former is near vertebrae , which may injure it. [ 2 ]
The trachea is the largest tube in the respiratory tract and consists of tracheal rings of hyaline cartilage. It branches off into two bronchial tubes, a left and a right main bronchus. The bronchi branch off into smaller sections inside the lungs, called bronchioles. These bronchioles give rise to the air sacs in the lungs called the alveoli. [10]
The trachea divides into the left main bronchus which supplies the left lung, and the right main bronchus which supplies the right lung. As they enter the lungs these primary bronchi branch into secondary bronchi known as lobar bronchi which supply each lobe of the lung.
It helps to divide the trachea into two primary bronchi. The right bronchus makes an angle of 25°, while the left one makes an angle of 45°. The carina is a sensitive area. When the patient is made to lie on their left side, secretions from the right bronchial tree flow toward the Carina due to the effect of gravity.
Tracheobronchitis is often a hospital-acquired infection, particularly in an intensive care setting, associated with the use of mechanical ventilators, and the need for inserting a tracheal tube. In these cases it is known as ventilator-associated tracheobronchitis. The infection begins in the trachea where it colonises and spreads to the bronchi.
The carina of trachea (also: "tracheal carina" [1]) is a ridge [1] of cartilage [2] at the base of the trachea separating the openings of the left and right main bronchi. [ 1 ] [ 2 ] Structure