The Substance That Prevents the Sacs at the Ends of the Bronchioles

question 212

Multiple Choice

The substance that prevents the sacs at the ends of the bronchioles from collapsing is:

• A) atelectasis.
• B) mucus.
• C) cilia.
• D) surfactant.

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Definitions:

Stable Nucleus

An atomic nucleus that is not prone to radioactive decay and remains unchanged over time.

Earth's Crust

The outermost solid shell of the planet, known for being the layer on which we live and where most geological events occur.

Synthetic Substances

Artificial materials created through chemical processes, not found naturally.

Coal

A natural, black or brownish-black sedimentary rock used primarily as a fuel source in electricity generation and steel production.