Nokea
Number of alveoli in the two human lungs is
- A. 600-800 millions
- B. 200-300 millions
- C. 1-2 millions
- D. 100,000-150,000 millions
Correct Answer: A
Rationale: The correct answer is A (600-800 millions) because the alveoli are tiny air sacs in the lungs responsible for gas exchange. An adult human lung has approximately 300-400 million alveoli, with two lungs totaling 600-800 million. Choice B (200-300 millions) and C (1-2 millions) are incorrect because they underestimate the total number of alveoli in both lungs. Choice D (100,000-150,000 millions) is incorrect as it overestimates the number of alveoli by a significant margin.
You may also like to solve these questions
Branches of bronchial tree
- A. primary bronchi_trachea_secondary bronchi_tertiary_bronchioles_terminal
- B. trachea-pri bronchi-sec bronchi-ter bronchi-bronchioles-terinnal
- C. Both a and b
- D. itis
Correct Answer: B
Rationale: The correct answer is B because it correctly lists the branches of the bronchial tree in order: trachea-primary bronchi-secondary bronchi-tertiary bronchi-bronchioles-terminal. The trachea divides into the primary bronchi, which further divide into secondary bronchi, followed by tertiary bronchi, bronchioles, and finally terminal bronchioles. Choice A is incorrect because it lists "primary bronchi_trachea" which is out of order and "tertiary_bronchioles" instead of "tertiary bronchi." Choice C is incorrect because it combines the incorrect order of branches from both A and B. Choice D, "itis," is not a valid term related to the branches of the bronchial tree.
2,3 DPG causes shifting of Oxygen dissociation curve in Adult Hb to Right because
- A. It increases Oxygen affinity for Hemoglobin
- B. It binds to Beta chain of Hb
- C. Its concentration is high in adults
- D. It lacks Hb binding sites
Correct Answer: B
Rationale: The correct answer is B because 2,3 DPG binds to the Beta chain of Hemoglobin, reducing its oxygen affinity, causing a right shift in the Oxygen dissociation curve. This change allows for easier oxygen unloading in tissues. Choice A is incorrect as 2,3 DPG decreases, not increases, oxygen affinity. Choice C is irrelevant as its concentration is not a factor in the shifting of the curve. Choice D is incorrect as 2,3 DPG does bind to Hemoglobin, specifically to the Beta chain.
A client has been hospitalized with tuberculosis (TB). The client's spouse is fearful of entering the room where the client is in isolation and refuses to visit. What action by the nurse is best?
- A. Ask the spouse to explain the fear of visiting in further detail.
- B. Inform the spouse that the precautions are meant to keep other clients safe.
- C. Show the spouse how to follow the Isolation Precautions to avoid illness.
- D. Tell the spouse that he or she has already been exposed, so it's safe to visit.
Correct Answer: A
Rationale: The correct answer is A: Ask the spouse to explain the fear of visiting in further detail. By asking the spouse to explain their fear, the nurse can address and alleviate specific concerns, providing tailored support. This approach promotes open communication and understanding, which may help the spouse feel more comfortable visiting.
B: Informing the spouse about precautions may not address the underlying fear and could come across as dismissive.
C: Showing how to follow precautions does not directly address the spouse's fear and may not be sufficient to alleviate concerns.
D: Telling the spouse they have already been exposed may not address their fear and could potentially increase anxiety.
A nurse cares for a client who has hypertension that has not responded well to several medications. The client states compliance is not an issue. What action would the nurse take next?
- A. Assess the client for obstructive sleep apnea.
- B. Arrange a home sleep apnea test.
- C. Encourage the client to begin exercising.
- D. Schedule a polysomnography
Correct Answer: A
Rationale: The correct answer is A: Assess the client for obstructive sleep apnea. Hypertension that is not responding to medications may be due to underlying sleep apnea, a common comorbidity. By assessing for obstructive sleep apnea, the nurse can identify a potential contributing factor to the client's uncontrolled hypertension. This step is crucial in managing the client's condition effectively.
Summary of other choices:
B: Arranging a home sleep apnea test may be premature without first assessing the client for obstructive sleep apnea.
C: Encouraging the client to begin exercising is important for overall health but may not directly address the uncontrolled hypertension.
D: Scheduling a polysomnography may be necessary if obstructive sleep apnea is suspected after the initial assessment.
A 62-yr-old client who has no history of hypertension or other health problems suddenly develops a blood pressure (BP) of 198/110 mm Hg. After reconfirming the BP.What is most appropriate for the nurse to tell the client
- A. BP recheck should be scheduled in a few weeks.
- B. dietary sodium and fat content should be decreased.
- C. diagnosis, treatment, and monitoring will be needed.
- D. there is danger of a stroke, requiring hospitalization.
Correct Answer: C
Rationale: The correct answer is C because a sudden spike in blood pressure to 198/110 mm Hg is considered hypertensive crisis requiring immediate medical attention. The nurse should inform the client that diagnosis, treatment, and monitoring are necessary to address the high blood pressure. This is important to prevent serious complications like stroke or heart attack.
Option A is incorrect because waiting a few weeks for a BP recheck could be dangerous in this scenario. Option B is also incorrect as simple dietary changes may not be sufficient to address such high blood pressure levels. Option D is incorrect as hospitalization may or may not be required based on the assessment and treatment plan determined by the healthcare provider.