In the Lungs,an Example of the Body's Reserve Capacity Is

question 30

Multiple Choice

In the lungs,an example of the body's reserve capacity is that

• A) some areas of the lung can be closed off during rest and opened again when needed during exercise.
• B) capillary beds in the lungs are reversibly collapsible, allowing blood to be shunted to additional areas during exercise.
• C) pulmonary blood flow is completely under the control of the autonomic nervous system, dilating arteries and arterioles to adjust blood flow.
• D) All of the statements are true.
• E) None of the statements are true.

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Definitions:

Chemical Modification

The alteration of a chemical compound's structure to change its properties or activity, often used in drug development and material science.

Kinase Enzymes

Enzymes that catalyze the transfer of phosphate groups from high-energy donor molecules to specific substrates, playing key roles in cellular signaling.

Proteolytic Processing

The cleavage of proteins into smaller polypeptides or amino acids, often activating or deactivating the protein's function.

Protein Degradation

The process of breaking down proteins into their constituent amino acids or peptides, usually by cellular enzymes.