What Happens to the Amount of Cilia Lining the Inner

question 126

Multiple Choice

What happens to the amount of cilia lining the inner walls of the respiratory tract as it moves down from the upper conducting zone to the lower respiratory zone?

• A)thickens
• B)decreases
• C)no change
• D)increases
• E)atrophies

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Definitions:

Experimental Group

In scientific research, the group of subjects that receive the treatment or condition being tested.

Smallest Unit

The smallest measurable or functional element or part of something, often referred to in different contexts (e.g., atom in physics, cell in biology).

Life

A characteristic that distinguishes physical entities with biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased or never had them.

Ecosystem

A biological community of interacting organisms and their physical environment, interconnected through nutrient cycles and energy flows.