Microscopic Hair-Like Structures That Sweep Foreign Substances Out of the Lungs

question 21

Multiple Choice

Microscopic hair-like structures that sweep foreign substances out of the lungs are called

• A)ciliA.
• B)phagocytic cells.
• C)macrophages.
• D)enzymes.

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Definitions:

Phagocytosis

Process by which cells engulf large substances, forming an intracellular vacuole.

Bloodstream

The flowing body fluid that circulates throughout the body via the heart and blood vessels, carrying oxygen and nutrients to tissues and removing waste.

Active Transport

The energy-dependent process of moving molecules across a cell membrane against their concentration gradient, typically involving specific transport proteins.

Energy

The capacity to do work or cause physical change; energy can exist in a variety of forms, such as electrical, chemical, mechanical, and thermal.