Nokea
Regarding the lung
- A. There are about 300 million alveoli in the human lung
- B. The terminal bronchioles are the smallest airways without alveoli
- C. Anatomic dead space = 150 ml
- D. All of the above are true
Correct Answer: D
Rationale: The correct answer is D because all of the statements are true.
A: The human lung contains approximately 300 million alveoli, which are essential for gas exchange.
B: Terminal bronchioles are the smallest airways without alveoli, connecting the bronchioles to the alveoli.
C: Anatomic dead space refers to the volume of air in the respiratory system that does not participate in gas exchange and is approximately 150 ml.
Therefore, since all statements are accurate, the correct answer is D.
You may also like to solve these questions
Which assessment information will you need to communicate to the physician?
- A. The client says she has not been to the lab to have an aPTT done.
- B. The right calf is warm to touch and is larger than the left calf.
- C. The client is unable to remember her husband's name.
- D. There are multiple ecchymotic areas on the client's arms.
Correct Answer: B
Rationale: The correct answer is B. Swelling and warmth in the right calf suggest worsening DVT, warranting immediate physician notification. Missing lab tests (A), cognitive issues (C), and bruising (D) are less urgent.
during rest state normal breathing called
- A. Breathing
- B. diaphragmatic
- C. Diaphragmatic breathing
- D. non
Correct Answer: C
Rationale: The correct answer is C: Diaphragmatic breathing. During rest, normal breathing involves the diaphragm contracting and moving downward to draw air into the lungs. This type of breathing is known as diaphragmatic breathing. Choice A (Breathing) is too broad and does not specify the involvement of the diaphragm. Choice B (Diaphragmatic) does not fully describe the process of breathing during rest. Choice D (Non) is incorrect as it does not provide any information related to the breathing process during rest state. Therefore, C is the most accurate choice as it specifically identifies the type of breathing that occurs during rest.
The partial pressure of oxygen in the interstitial space of peripheral tissues is approximately
- A. 40 mm Hg
- B. 45 mm Hg
- C. 50 mm Hg
- D. 70 mm Hg
Correct Answer: A
Rationale: The correct answer is A: 40 mm Hg. In peripheral tissues, oxygen is delivered by the blood through capillaries. The partial pressure of oxygen in the interstitial space of peripheral tissues is lower than in the blood, around 40 mm Hg. This allows for the diffusion of oxygen from capillaries to cells. Choice B (45 mm Hg) and C (50 mm Hg) are slightly higher pressures and would not promote efficient oxygen diffusion. Choice D (70 mm Hg) is closer to arterial blood oxygen levels and would not allow sufficient oxygen release to tissues. Thus, the correct answer is A as it reflects the physiological conditions necessary for effective oxygen delivery to cells.
A patient is having her tonsils removed. The patient asks the nurse what function the tonsils normally serve. Which of the following would be the most accurate response?
- A. The tonsils separate your windpipe from your throat when you swallow.
- B. The tonsils help to guard the body from invasion of organisms.
- C. The tonsils make enzymes that you swallow and which aid with digestion.
- D. The tonsils help with regulating the airflow down into your lungs.
Correct Answer: B
Rationale: The correct answer is B: The tonsils help to guard the body from invasion of organisms. Tonsils are part of the immune system and act as the body's first line of defense against bacteria and viruses that enter through the mouth and nose. They help to trap and kill these pathogens, preventing them from causing infections in the body. This function is essential for overall immune response and protection against illnesses.
Explanation for why the other choices are incorrect:
A: The tonsils do not separate the windpipe from the throat. That function is performed by the epiglottis.
C: Tonsils do not make enzymes for digestion. Enzymes for digestion are mainly produced by the pancreas and salivary glands.
D: Tonsils do not regulate airflow into the lungs. The epiglottis and other structures in the respiratory system are responsible for regulating airflow.
A patient is scheduled to have excess pleural fluid aspirated with a needle in order to relieve her dyspnea. The patient inquires about the normal function of pleural fluid. What should the nurse describe?
- A. It allows for full expansion of the lungs within the thoracic cavity.
- B. It prevents the lungs from collapsing within the thoracic cavity.
- C. It limits lung expansion within the thoracic cavity.
- D. It lubricates the movement of the thorax and lungs.
Correct Answer: D
Rationale: The correct answer is D: It lubricates the movement of the thorax and lungs. Pleural fluid acts as a lubricant between the layers of the pleura, reducing friction and allowing smooth movement during respiration. This function is crucial for the efficient expansion and contraction of the lungs during breathing.
Explanation:
1. A (It allows for full expansion of the lungs within the thoracic cavity): While pleural fluid does contribute to lung expansion, its main role is not to solely allow for full expansion.
2. B (It prevents the lungs from collapsing within the thoracic cavity): This is incorrect as the pleural pressure, rather than the pleural fluid, prevents lung collapse.
3. C (It limits lung expansion within the thoracic cavity): This is incorrect as pleural fluid actually facilitates lung expansion by reducing friction.