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A nurse is teaching a class about oxygen transport in the cardiopulmonary system. Which of the following transports oxygen in the blood?

A.

Lymphocytes

B.

Neutrophils

C.

Platelets

D.

Hemoglobin

Answer and Explanation

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.
 


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Related Questions

Correct Answer is C

Explanation

A. pH 7.35, PaCO2 40 mm Hg, HCO3-25 mEq/L: This is within normal ranges and does not indicate acidosis.
B. pH 7.32, PaCO2 47 mm Hg. HCO3-23 mEq/L: This indicates respiratory acidosis, not metabolic.
C. pH 7.3, PaCO2 36 mm Hg. HCO3- 19 mEq/L: This indicates metabolic acidosis. The pH is low (acidic), and the HCO3- (bicarbonate) is decreased. The PaCO2 is within normal limits, indicating the respiratory system is compensating for the metabolic acidosis.
D. pH 7.5, PaCO2 35 mm Hg, HCO3- 35 mEq/L: This indicates alkalosis, not acidosis.

Correct Answer is C

Explanation

A. Changing the patient's head position during suctioning can increase discomfort and hypoxia.
B. This is premature. The tachycardia may be a temporary response to the suctioning procedure.
C. The increased heart rate is likely a response to the stimulation of suctioning. Stopping the procedure allows the patient to recover and reassessment can determine if further suctioning is necessary.
D. This is excessive and not necessary at this time.

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