A nursing instructor is conducting a class on the different types of blood cells.
Which of the following would the instructor include as the correct function?
Erythrocytes supply our cells with oxygen from the lungs to the tissues.
Erythrocytes control bleeding from microscopic to major tears in our tissues.
Leukocytes supply our cells with oxygen from the lungs to the tissues.
Thrombocytes control bleeding.
The Correct Answer is A
Choice A rationale:
Erythrocytes, also known as red blood cells, are responsible for supplying our cells with oxygen from the lungs to the tissues. Hemoglobin, a protein within erythrocytes, binds to oxygen in the lungs and releases it in the body's tissues, ensuring that our cells receive the oxygen they need for metabolic processes. This is the primary function of erythrocytes.
Choice B rationale:
Erythrocytes do not control bleeding from microscopic to major tears in our tissues. Hemostasis, or the control of bleeding, is primarily the role of platelets (thrombocytes) and clotting factors in the blood. While erythrocytes are essential for oxygen transport, they are not directly involved in the process of controlling bleeding.
Choice C rationale:
Leukocytes, also known as white blood cells, are not responsible for supplying our cells with oxygen. Their primary function is to help our body fight infection and respond to various immune challenges, including bacterial and viral infections.
Choice D rationale:
Thrombocytes, also known as platelets, play a crucial role in controlling bleeding. They are responsible for the initial stages of hemostasis, forming blood clots to prevent excessive bleeding when blood vessels are damaged. This is their primary function, distinct from the role of erythrocytes in oxygen transport. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Constipation is a potential adverse reaction to ferrous sulfate (Feosol), an iron supplement. Iron can cause gastrointestinal disturbances, including constipation, due to its effect on slowing down bowel movements and hardening of stool. It is important for the nurse to discuss this with the client before administering the drug to ensure the client is aware of this potential side effect.
Choice B rationale:
Fluid retention is not a common adverse reaction to ferrous sulfate. In fact, iron supplements are more likely to cause gastrointestinal issues like constipation rather than fluid retention.
Choice C rationale:
Fatigue is not a direct adverse reaction to ferrous sulfate. In some cases, iron deficiency can lead to fatigue, but this is usually a result of the underlying condition and not the medication itself.
Choice D rationale:
Clay-colored stools are not a typical adverse reaction to ferrous sulfate. This may indicate a potential issue with liver function or biliary obstruction but is not directly related to the iron supplement.
Correct Answer is C
Explanation
Choice A rationale:
Tapeworm. Tapeworm infections are caused by parasites known as cestodes. Antiprotozoal drugs are primarily used to treat infections caused by protozoa, which are a different type of pathogen. Tapeworms are not protozoa; they are classified as helminths. Therefore, using antiprotozoal drugs for tapeworm infections is not indicated.
Choice B rationale:
Aspergillosis. Aspergillosis is a fungal infection caused by Aspergillus species. Antiprotozoal drugs are not effective against fungal infections. They are designed to target protozoa, which are a different group of microorganisms. Therefore, antiprotozoal drugs are not indicated for the treatment of aspergillosis.
Choice D rationale:
Cryptococcal meningitis. Cryptococcal meningitis is a fungal infection caused by Cryptococcus neoformans. Like aspergillosis, it is caused by a fungus, not a protozoan parasite. Antiprotozoal drugs are not appropriate for the treatment of fungal infections. Therefore, the use of antiprotozoal drugs is not indicated for cryptosporidium meningitis.
Choice C rationale:
Giardiasis. Giardiasis is an intestinal infection caused by the protozoan parasite Giardia lamblia. Antiprotozoal drugs, such as metronidazole, are effective in treating giardiasis. These drugs target protozoa and disrupt their cellular functions, making them a suitable choice for the treatment of giardiasis.
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