Answered

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Which of the following occurs in the upper respiratory system?

A. Air enters the alveoli
B. Air enters the bloodstream
C. Air is filtered and moistened
D. Air is delivered to muscles

Sagot :

GinnyAnsweridn

Final answer:

Air is filtered and moistened in the upper respiratory system through the nasal cavity to protect the lungs.


Explanation:

Air is filtered and moistened as it passes through the nasal cavity in the upper respiratory system. The mucus and hairs in the nasal cavity trap particles, and the air is warmed and moistened to protect delicate lung tissues.


Learn more about Respiratory System here:

https://brainly.com/question/38177322


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