Unlike Inspiration,expiration Is a Passive Act Because No Muscular Contractions

question 31

Multiple Choice

Unlike inspiration,expiration is a passive act because no muscular contractions are involved.Expiration,however,depends on two factors.Which of the choices below lists those two factors?

• A)the expansion of respiratory muscles that were contracted during inspiration and the lack of surface tension on the alveolar wall
• B)combined amount of CO2 in the blood and air in the alveoli
• C)the negative feedback of expansion fibers used during inspiration and the outward pull of surface tension due to surfactant
• D)the recoil of elastic fibers that were stretched during inspiration and the inward pull of surface tension due to the film of alveolar fluid

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Definitions:

Biconcave Shape

Describes the geometry of objects, such as red blood cells, that are concave on both sides, aiding in flexibility and the area for gas exchange.

Mitochondria

Membrane-bound organelles found in the cytoplasm of almost all eukaryotic cells, responsible for generating most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.

Nuclei

The plural of nucleus, referring to the membrane-bound organelles in cells that contain genetic material.

Granules

Small particles or grains, often referring to microscopic structures within cells that contain enzymes and other substances.