Inspiration Normally Takes Place When the Intrathoracic Pressure Is Slightly

question 14

Multiple Choice

Inspiration normally takes place when the intrathoracic pressure is slightly below atmospheric pressure and when a partial vacuum exists between the parietal and visceral pleural (intrathoracic) surfaces.As the muscles of inspiration contract to enlarge the chest cage,what action by the lungs occurs to facilitate air intake?

• A) The lungs recoil and expand to draw air into them.
• B) The lungs are passive and follow the diaphragm and chest wall.
• C) The lungs produce a pressure gradient that suctions air.
• D) The alveolar sacs expand when triggered by neural triggers in all 10 lung segments.

---

Definitions:

Associative Learning

The learning process through which an individual forms connections between stimuli or behaviors and certain events or conditions.

Operant Learning

A learning approach that involves the use of consequences and reinforcements for actions, where a link is established between a specific behavior and its outcome.

Observational Learning

Learning that occurs through observing the behavior of others and the outcomes of those behaviors.

Reinforcement

A concept in behaviorism that describes any stimulus which strengthens or increases the probability of a specific response.