Which of the Following Is Necessary for the Lungs to Remain

question 50

Multiple Choice

Which of the following is necessary for the lungs to remain expanded?

• A)The alveolar cells must secrete surfactant.
• B)The intrapulmonic pressure must be negative.
• C)The glottis must be closed.
• D)The intrapleural pressure must be negative.

---

Definitions:

Market segment

A subset of a market made up of consumers or organizations that have similar characteristics and needs, targeted with specific marketing strategies.

Print media

Traditional forms of mass communication that disseminate information through printed materials such as books, newspapers, and magazines.

Media types

Categories of communication channels through which information is disseminated, such as print, broadcast, digital, and social media.

Social system

An organized collection of parts that are integrated to accomplish an overall goal; often refers to a society's structured network of relationships and institutions.