Answer: Posterior
The trachea is __________ to the espohagus.
The trachea also called 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 air-breathing animals with lungs. The trachea extends from the larynx and branches into the two primary bronchi. At the top of the trachea the cricoid cartilage attaches it to the larynx. The trachea is formed by a number of horseshoe-sha…
The trachea also called 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 air-breathing animals with lungs. The trachea extends from the larynx and branches into the two primary bronchi. At the top of the trachea the cricoid cartilage attaches it to the larynx. The trachea is formed by a number of horseshoe-shaped rings joined together vertically by ligaments over their substance and by the trachealis muscle at their ends. The epiglottis closes the opening to the larynx during swallowing. The trachea begins to form in the second month of development becoming longer and more fixed in its position over time. It is epithelium lined with column-shaped cells that have hair-like extensions called cilia with scattered goblet cells that produce protective mucins. The trachea can be affected by inflammation or infection usually as a result of a viral illness affecting other parts of the respiratory tract such as the larynx and bronchi called croup that can result in a barking cough. Infection with bacteria usually affects the trachea only and can cause narrowing or even obstruction. As a major part of the respiratory tract when obstructed the trachea prevents air entering the lungs and so a tracheostomy may be required if the trachea is obstructed. Additionally during surgery if mechanical ventilation is required when a person is sedated a tube is inserted into the trachea called intubation. The word "trachea" is used to define a very different organ in invertebrates than in vertebrates. Insects have an open respiratory system made up of spiracles tracheae and tracheoles to transport metabolic gases to and from tissues.
An adult's trachea has an inner diameter of about 1.5 to 2 centimetres (0.59 to 0.79 in) and a length of about 10 to 11 centimetres (3.9 to 4.3 in); wider in males than females. It begins at the bottom of the larynx and ends at the carina the point where the trachea branches into left and right main bronchi . The trachea is surrounded by 16 - 20 rings of hyaline cartilage ; these 'rings' are 4…
An adult's trachea has an inner diameter of about 1.5 to 2 centimetres (0.59 to 0.79 in) and a length of about 10 to 11 centimetres (3.9 to 4.3 in); wider in males than females. It begins at the bottom of the larynx and ends at the carina the point where the trachea branches into left and right main bronchi . The trachea is surrounded by 1...
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