A nurse is teaching a class about oxygen transport in the cardiopulmonary system. Which of the following transports oxygen in the blood?
Lymphocytes
Neutrophils
Platelets
Hemoglobin
The Correct Answer is D
A. Lymphocytes are a type of white blood cell that plays a crucial role in the immune system, specifically in the response to infections and in immune regulation. They do not have a role in the transport of oxygen in the blood.
B. Neutrophils are another type of white blood cell that is essential for fighting bacterial infections. They are part of the body's immune response but do not transport oxygen.
C. Platelets are small cell fragments that are crucial for blood clotting and wound repair. They do not have a role in oxygen transport.
D. Hemoglobin is the primary molecule responsible for transporting oxygen in the blood. It is a protein found in red blood cells (erythrocytes) that binds to oxygen in the lungs and releases it in tissues throughout the body. Hemoglobin carries the majority of oxygen in the bloodstream and is essential for effective oxygen transport and delivery.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Rinsing the client's mouth helps to remove oral contaminants, ensuring that the sputum specimen is representative of the respiratory secretions.
B. Obtaining the specimen in the evening is not a specific requirement; the best time to collect the specimen is when the client has the most productive cough.
C. Saving the sputum specimen in a clean container is essential to prevent contamination. However, a sterile container is usually required.
D. Collecting the sputum specimen after a meal might induce coughing but can also contaminate the specimen with food particles.
Correct Answer is B
Explanation
A. Hyperventilation can lead to dizziness and lightheadedness, and it's not a recommended method for preventing atelectasis.
B. This statement indicates understanding of the importance of deep breathing exercises in preventing atelectasis.
C. This statement shows a misunderstanding of atelectasis. Anyone can develop atelectasis, especially after surgery.
D. This statement is incorrect, but it focuses on treatment rather than prevention.
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