Examlex
Which is the idealized unidirectional pathway along which energy flows through an ecosystem?
Cilia
Microscopic, hair-like structures protruding from the surface of some cells, moving liquid past the cell or moving the cell itself.
Mucus
A thick, slippery substance produced by glands in the lining of the body's passageways, such as the respiratory, digestive, and reproductive tracts, serving as a protective lubricant.
Distal Airways
The segments of the respiratory system that are furthest from the mouth, including the smaller bronchioles and alveoli, crucial for gas exchange.
Central Airways
The major air passages leading from the trachea to the lungs, facilitating the movement of air in and out of the lungs.
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