Nokea
The thymus gland role with the immune system is which of the following?
- A. Maturates B cells
- B. Maturates platelets
- C. Maturates red blood cells
- D. Maturates T cells
Correct Answer: D
Rationale: The correct answer is D: Maturates T cells. The thymus gland is crucial for the maturation of T cells, a type of white blood cell that plays a central role in the adaptive immune response. T cells mature in the thymus through a process of selection and education, where they learn to distinguish self from non-self antigens. This process is essential for the development of a functional immune system. Choices A, B, and C are incorrect because the thymus gland does not play a role in the maturation of B cells, platelets, or red blood cells, respectively.
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Which of the ff causes memory cells to convert to plasma cells?
- A. An organ transplant
- B. Re-exposure to a specific antigen
- C. Release of lymphokines
- D. Initial exposure to an antigen
Correct Answer: B
Rationale: The correct answer is B: Re-exposure to a specific antigen. Memory cells are formed after initial exposure to an antigen. Upon re-exposure to the same antigen, memory cells quickly recognize and respond, converting into plasma cells to produce antibodies. This process is known as secondary immune response.
Incorrect choices:
A: An organ transplant - Organ transplant does not involve the conversion of memory cells to plasma cells.
C: Release of lymphokines - Lymphokines are signaling molecules secreted by immune cells but do not directly cause memory cells to convert to plasma cells.
D: Initial exposure to an antigen - Initial exposure to an antigen leads to the formation of memory cells, not their conversion to plasma cells upon re-exposure.
What does a nurse assess postoperatively in a client with a nasal fracture?
- A. Allergic reaction
- B. Extreme sense of smell
- C. Airway obstruction
- D. Stridor
Correct Answer: C
Rationale: The correct answer is C: Airway obstruction. Postoperatively, a nurse must assess for airway patency in a client with a nasal fracture to ensure proper breathing. Any swelling or bleeding in the nasal area can lead to airway obstruction, which is a critical concern that needs immediate intervention. Choices A, B, and D are incorrect because an allergic reaction, extreme sense of smell, and stridor are not typically associated with postoperative assessment of a nasal fracture. It is crucial to prioritize airway assessment to prevent any complications related to breathing difficulties in this situation.
Severe and extensive hemolysis causes which of the ff?
- A. Leg ulcers
- B. Shock
- C. Priapism
- D. Compromised growth
Correct Answer: B
Rationale: Severe and extensive hemolysis leads to the release of large amounts of hemoglobin into the bloodstream, causing hemoglobinemia. This can result in hemoglobinuria, leading to acute renal failure and ultimately shock. Shock is the correct answer as it is a severe consequence of extensive hemolysis. Leg ulcers (A) may occur in conditions like peripheral arterial disease. Priapism (C) is unrelated to hemolysis. Compromised growth (D) is not a common consequence of hemolysis.
A nurse is providing nursing care to patients after completing a care plan from nursing diagnoses. In which step of the nursing process is the nurse?
- A. Assessment
- B. Planning
- C. Implementation
- D. Evaluation
Correct Answer: C
Rationale: The correct answer is C: Implementation. In this step of the nursing process, the nurse is carrying out the care plan based on the identified nursing diagnoses. The nurse is actively providing care and interventions to meet the patient's needs.
Assessment (A) is the initial step where data is collected and analyzed. Planning (B) is where goals and interventions are determined based on assessment findings. Evaluation (D) is the final step where the nurse assesses the effectiveness of the care provided.
In this scenario, the nurse has already completed the care plan and is now executing the plan by implementing the interventions, making choice C the correct answer.
A nurse is using the problem-oriented approach to data collection. Which action will the nurse take first?
- A. Complete the questions in chronological order.
- B. Focus on the patient’s presenting situation.
- C. Make accurate interpretations of the data.
- D. Conduct an observational overview.
Correct Answer: B
Rationale: The correct answer is B: Focus on the patient’s presenting situation. In the problem-oriented approach, the nurse prioritizes the patient's immediate concerns to address them effectively. By focusing on the presenting situation first, the nurse can gather relevant data and identify key issues. This step ensures that the nurse addresses the most pressing problems promptly.
A: Completing questions in chronological order may not be necessary and could delay addressing the immediate concern.
C: Making accurate interpretations of data should come after gathering relevant information about the presenting situation.
D: Conducting an observational overview is important but should come after focusing on the patient's presenting situation to gather specific data.