Nokea
Pneumatic and inhibitory centers are associated with
- A. Respiration
- B. Breathing
- C. Inspiration
- D. Expiration
Correct Answer: B
Rationale: The correct answer is B: Breathing. Pneumatic and inhibitory centers are associated with controlling the process of breathing. The pneumatic center regulates the rate and depth of breathing, while the inhibitory center helps in controlling the duration and intensity of breathing. Therefore, these centers are directly involved in the overall process of breathing. Choices A, C, and D are incorrect as they are specific components or stages of the breathing process, whereas the correct answer encompasses the entire act of breathing, making it the most comprehensive and appropriate choice.
You may also like to solve these questions
In which part of respiratory system gaseous exchange takes place?
- A. alveoli
- B. pharynx
- C. larynx
- D. Trachea
Correct Answer: A
Rationale: The correct answer is A: alveoli. Alveoli are tiny air sacs in the lungs where gas exchange occurs. Oxygen from the air we breathe diffuses into the blood, and carbon dioxide from the blood diffuses into the alveoli to be exhaled. The pharynx, larynx, and trachea are parts of the respiratory system but do not participate in gaseous exchange. The pharynx serves as a passage for air and food, the larynx houses the vocal cords, and the trachea carries air to and from the lungs. Only the alveoli have the thin walls and large surface area necessary for efficient exchange of gases.
A male patient has a sucking stab wound to the chest. Which action should the nurse take first?
- A. Drawing blood for a hematocrit and hemoglobin level.
- B. Applying a dressing over the wound and taping it on three sides.
- C. Preparing a chest tube insertion tray.
- D. Preparing to start an I.V. line.
Correct Answer: B
Rationale: The correct answer is B. Applying a dressing over the wound and taping it on three sides should be done first to prevent air from entering the wound and causing a tension pneumothorax. This action helps stabilize the wound and minimizes the risk of further complications. Drawing blood for hematocrit and hemoglobin (A) is not the priority in this situation. Chest tube insertion (C) and starting an IV line (D) can be necessary interventions but are not the immediate priority in managing a sucking chest wound.
Pulmonary ventilation also called
- A. inhalation
- B. exhalation
- C. Breathing
- D. all of these
Correct Answer: C
Rationale: The correct answer is C: Breathing. Pulmonary ventilation refers to the process of breathing, which involves both inhalation and exhalation. Inhalation is the act of taking in air, while exhalation is the act of expelling air. Therefore, the term "pulmonary ventilation" encompasses both inhalation and exhalation, making choice C the correct answer. Choices A and B are incorrect because they only represent one part of the breathing process. Choice D is incorrect because it suggests that all choices are correct, which is not accurate in this context.
At a PO2 of 70 mm Hg and normal temperature and pH, hemoglobin is ________ percent saturated with oxygen.
- A. 10
- B. 25
- C. 50
- D. more than 90
Correct Answer: D
Rationale: The correct answer is D (more than 90). At a PO2 of 70 mm Hg, hemoglobin is more than 90% saturated with oxygen due to the high oxygen affinity of hemoglobin at this partial pressure. Hemoglobin exhibits near-maximal saturation at this level, promoting efficient oxygen binding and transport. Choices A, B, and C are incorrect as they do not accurately reflect the high oxygen saturation levels associated with a PO2 of 70 mm Hg.
A nurse assesses a client who has a nasal fracture. The client reports constant nasal drainage
- A. a headache
- B. and difficulty with vision. What action would the nurse take next?
- C. Collect the nasal drainage on a piece of filter paper.
- D. Encourage the client to blow his or her nose.
Correct Answer: A
Rationale: The correct answer is A: a headache. Nasal drainage with a nasal fracture can indicate a potential cerebrospinal fluid leak, leading to a headache. This symptom requires immediate attention to rule out serious complications. Choice B is incorrect because difficulty with vision is not typically associated with a nasal fracture. Choice C is incorrect as collecting drainage on filter paper does not address the client's symptoms. Choice D is incorrect as blowing the nose can exacerbate the fracture and should be avoided.