ATI RN
Questions About the Respiratory System Questions
Question 1 of 5
In describing the parts of the respiratory system, the word 'septum' designates a partition in the
Correct Answer: B
Rationale: The correct answer is B: nasal cavities. The term "septum" refers to a partition or dividing wall that separates two cavities. In the context of the respiratory system, the nasal septum divides the nasal cavities into left and right sides. This separation helps to regulate airflow and also provides structural support for the nasal passages. Other choices are incorrect because: A: The larynx is not typically associated with a septum. It is primarily responsible for vocalization and protecting the airway. C: The pharynx is a passageway for air and food, but it does not contain a septum dividing it into distinct sections. D: The glottis is the space between the vocal cords in the larynx and does not have a septum separating it into parts.
Question 2 of 5
During internal and external respiration, gases move by
Correct Answer: C
Rationale: The correct answer is C: diffusion. During internal and external respiration, gases move from areas of high concentration to low concentration through passive diffusion. This process is driven by the concentration gradient, allowing gases like oxygen and carbon dioxide to exchange in the lungs and tissues. Osmosis (A) is the movement of water across a semipermeable membrane, not gases. Active transport (B) requires energy and moves substances against their concentration gradient, which is not how gases move during respiration. Endocytosis (D) is a process where cells engulf substances by forming vesicles, not how gases are exchanged in respiration.
Question 3 of 5
Vital capacity of lungs of an average human is
Correct Answer: A
Rationale: The vital capacity of lungs is the maximum amount of air a person can exhale after a maximum inhalation. The average vital capacity for an adult human is typically between 3000-4500 ml. This range allows for efficient gas exchange in the lungs. Choice B (1500-1800 ml) and Choice C (2000-2500 ml) fall below the average vital capacity, indicating limited lung capacity. Choice D (500-1000 ml) is significantly low and would not support normal respiratory function. Therefore, Choice A (3000-4500 ml) is the correct answer as it aligns with the average vital capacity range for an average human.
Question 4 of 5
Muscles attached to diaphragm contract during inspiration to make it
Correct Answer: A
Rationale: The correct answer is A: Flat. During inspiration, the muscles attached to the diaphragm contract, causing it to flatten. This action increases the volume of the thoracic cavity, allowing air to rush into the lungs. The diaphragm moving downward creates a larger space for the lungs to expand. Choices B, C, and D are incorrect because the diaphragm does not become dome-shaped, concave, or rotate during inspiration. The key concept here is understanding the role of the diaphragm in the breathing process and how its contraction affects the shape of the thoracic cavity.
Question 5 of 5
A nurse is caring for a client using oxygen while in the hospital. What assessment finding indicates that outcomes for client safety with oxygen therapy are being met?
Correct Answer: B
Rationale: The correct answer is B. Intact skin behind the ears indicates that the oxygen delivery device is fitted properly and not causing skin breakdown, ensuring client safety. A (meals being eaten) is not directly related to oxygen therapy outcomes. C (client understanding) is important but doesn't directly assess client safety with oxygen therapy. D (unchanged weight) is not a specific indicator of client safety with oxygen therapy.