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Which of the following is NOT part of the upper respiratory system?
A
Trachea
B
Pharynx
C
Nasal cavity
D
Larynx
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1
Step 1: Understand the components of the upper respiratory system. The upper respiratory system includes structures that are involved in the intake and initial processing of air. These structures are the nasal cavity, pharynx, and larynx.
Step 2: Learn the role of the trachea. The trachea is part of the lower respiratory system, as it serves as the passageway for air to move from the larynx to the lungs.
Step 3: Compare the listed options to the components of the upper respiratory system. Identify which structures belong to the upper respiratory system and which do not.
Step 4: Recognize that the nasal cavity, pharynx, and larynx are all part of the upper respiratory system, while the trachea is part of the lower respiratory system.
Step 5: Conclude that the trachea is NOT part of the upper respiratory system based on its anatomical location and function.