In a severe allergic reaction, a person's tongue can swell up, effectively blocking the air passageways. An emergency procedure can be performed to restore airflow. Basically, a hole is cut into the passageways below the blockage to allow air to flow
into the lungs. What passageway would be best for the surgical hole?
What will be an ideal response?
The hole must be cut below the point of blockage, so if the tongue is blocking the airway, the pharynx is not a good candidate. The larynx might be a candidate, except that the procedure would cause damage to the voice box that could be permanent. The bronchi within the two lungs are not as close to the exterior of the body as is the trachea. The trachea begins just below the larynx and is the best location for the procedure.
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Other than the molecules they express, what is the difference between a CD4+ and an CD8+ T cell?
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a. true b. false
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