When pressure in the lungs drops lower than atmospheric pressure, what occurs?.
A pneumothorax forms, collapsing the lungs.
The bronchioles constrict, causing respiratory distress.
Air flows into the lungs.
Air flows out of the lungs.
The Correct Answer is C
The correct answer is: c. Air flows into the lungs.
Choice A: A pneumothorax forms, collapsing the lungs.
A pneumothorax occurs when air enters the pleural space, the area between the lung and the chest wall, causing the lung to collapse. This condition is typically caused by trauma or a spontaneous rupture of a lung bleb, not by a drop in lung pressure below atmospheric pressure. When the pressure in the lungs drops below atmospheric pressure, it facilitates the inflow of air into the lungs, not the collapse of the lungs.
Choice B: The bronchioles constrict, causing respiratory distress.
Bronchiolar constriction, or bronchoconstriction, is a narrowing of the airways in the lungs due to the tightening of surrounding smooth muscle. This can cause respiratory distress and is commonly seen in conditions like asthma. However, this is not directly related to the pressure changes in the lungs relative to atmospheric pressure. The primary effect of a drop in lung pressure below atmospheric pressure is the inflow of air, not bronchoconstriction.
Choice C: Air flows into the lungs.
When the pressure in the lungs drops below atmospheric pressure, a pressure gradient is created that allows air to flow into the lungs. This process is known as inspiration or inhalation. The diaphragm and intercostal muscles contract to increase the volume of the thoracic cavity, thereby decreasing the pressure within the lungs relative to the outside atmosphere, causing air to rush in.
Choice D: Air flows out of the lungs.
Air flows out of the lungs, or expiration, occurs when the pressure inside the lungs exceeds atmospheric pressure. This happens when the diaphragm and intercostal muscles relax, decreasing the volume of the thoracic cavity and increasing the pressure within the lungs. This is the opposite of what happens when lung pressure drops below atmospheric pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
hoice A rationale:
Peyer’s patches are lymphoid nodules located in the small intestine, not at the back of the throat.
Choice B rationale:
Lymph is a fluid that contains white blood cells and circulates throughout the lymphatic system, not a tissue located at the back of the throat.
Choice C rationale:
Tonsils are lymphoid tissues located at the back of the throat. They help protect the body from respiratory infections.
Choice D rationale:
The appendix is not located at the back of the throat. It is a narrow pouch that projects off the cecum in the digestive system.
Correct Answer is D
Explanation
Choice A rationale:
Neutrophils are a type of white blood cell that can ingest pathogens, but they are not the primary cells responsible for this task.
Choice B rationale:
Phagocytes is a general term for cells that can ingest pathogens and cellular debris. Macrophages and neutrophils are types of phagocytes.
Choice C rationale:
Basophils are a type of white blood cell, but their primary role is not to ingest pathogens. They are involved in allergic reactions and inflammation.
Choice D rationale:
Macrophages are the primary cells that ingest pathogens and cellular debris. They are a type of phagocyte.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.