Which of the Following Factors Does NOT Contribute to Defence

question 206

Multiple Choice

Which of the following factors does NOT contribute to defence of the respiratory system

• A)coughs and sneezes
• B)cilia-propelled mucus escalator
• C)alveolar macrophages
• D)normal microbial population of the lungs

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Definitions:

Orbicularis Oculi

A muscle in the face that encircles the eye, responsible for enabling blinking and squinting.

Insertion

The place where a muscle is attached to the bone that it moves.

Orbicularis Oculi

A circular muscle around the orb of the eye involved in closing the eyelids and enabling various facial expressions.

Diaphragm

A muscular and membranous partition separating the abdominal and thoracic cavities, crucial in the respiratory process.