Which Group Is Incorrect

question 2

Multiple Choice

Which group is incorrect?

• A) first line of defense:skin,mucous membrane,tears,sneezing
• B) specific immunity:B cells,T cells
• C) mechanical barriers:skin,mucous membrane
• D) chemical barriers:tears,saliva,stomach acid,B cells,T cells

---

Definitions:

Occupational Dust

Fine particles generated in workplaces from various processes like grinding, woodworking, mining, and manufacturing, potentially harmful when inhaled or ingested, affecting workers' health.

Difficulty Breathing

A condition where an individual experiences discomfort or effort in breathing, indicating potential respiratory issues.

Lying Down

The act of positioning oneself horizontally, typically on a surface like a bed or the ground, for rest or relaxation.

Epiglottis

The Epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, that prevents food and liquid from entering the windpipe during swallowing.