PHYSIOLOGY
PULMONARY PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -C-shaped cartilaginous rings reinforces the anterior and lateral sides of the trachea to protect and maintain the airway open. (The cartilaginous rings are incomplete because this allows the trachea to collapse slightly to allow food to pass down the esophagus.)
Detailed explanation-2: -The hyaline cartilage in the tracheal wall provides support and keeps the trachea from collapsing. The posterior soft tissue allows for expansion of the esophagus, which is immediately posterior to the trachea.
Detailed explanation-3: -They are not O-shaped due to the trachea’s proximity to the esophagus, which runs behind the trachea. The open part of the cartilage rings faces the esophagus, permitting the trachea to be compressed slightly when the esophagus bulges outward when the food is swallowed.