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 ["C"]
Explanation
A. Asking the client to read their identification bracelet can be additional verification steps, but it is not standard practice for all institutions
B. To point to the surgical site can be additional verification steps, but it is not standard practice for all institutions.
C. Using two acceptable client identifiers, such as the client's name and date of birth, to confirm the patient's identity.
D. It is important to verify that the surgical site has been marked, which is a critical step in preventing wrong-site surgery.
E. Asking the client to state the surgery being performed is a good practice as it involves the patient in their care and serves as a final verification of the correct procedure.
Correct Answer is B
Explanation
A. While a slightly elevated hematocrit can be associated with dehydration, it's not as specific as urine specific gravity.
B. This indicates concentrated urine, which is a classic sign of dehydration. Normal urine specific gravity is typically between 1.005 and 1.030.
C. This is a normal creatinine level and does not indicate dehydration.
D. This is within the normal range for sodium.
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