ATI RN
Questions About the Respiratory System Questions
Question 1 of 5
Hemoglobin gives up O2 when
Correct Answer: A
Rationale: The correct answer is A: carbon dioxide concentrations are high. When carbon dioxide levels are high, it leads to a decrease in blood pH, triggering hemoglobin to release oxygen more readily through the Bohr effect. This is a physiological response to maintain homeostasis. The other choices (B, C, D) do not directly affect the release of oxygen from hemoglobin.
Question 2 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 3 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 4 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.
Question 5 of 5
A nurse in a family practice clinic is preparing discharge instructions for a client reporting facial pain that is worse when bending over tenderness across the cheeks and postnasal discharge. What instruction will be most helpful?
Correct Answer: C
Rationale: The correct answer is C: Try warm, moist heat packs on your face. Warm, moist heat can help relieve facial pain and sinus pressure by promoting sinus drainage and reducing inflammation. Ice packs may not be as effective for this type of pain. Limiting fluids can worsen symptoms by drying out the sinuses. Scheduling a CT scan is not necessary at this point as the symptoms described are indicative of sinusitis, which can often be managed with conservative measures like warm compresses.