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.

Answer and Explanation

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. .

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Correct Answer is B

Explanation

A. Alkylating agents. B. Plant alkaloids. C. Antineoplastic antibiotics. D. Retinoids.

Correct Answer is B

Explanation

Choice A rationale:

Alkylating agents. Alkylating agents are not cell cycle-specific. These agents work by directly binding to DNA and interfering with the cell's ability to replicate and divide. Their action is not limited to a specific phase of the cell cycle, making them non-cell cycle-specific agents. Alkylating agents are often used in cancer chemotherapy to prevent cell division and growth.

Choice C rationale:

Antineoplastic antibiotics. Antineoplastic antibiotics are not cell cycle-specific either. These drugs, such as doxorubicin and bleomycin, work by disrupting DNA and RNA synthesis and are used to treat various types of cancer. However, they do not specifically target cells in a particular phase of the cell cycle.

Choice D rationale:

Retinoids. Retinoids are not cell cycle-specific antineoplastic agents. Retinoids are compounds related to vitamin A and are used for various medical purposes, including some cancer treatments. However, their mechanism of action is not tied to a specific phase of the cell cycle, making them non-cell cycle-specific.

Choice B rationale:

Plant alkaloids. Plant alkaloids, such as vinca alkaloids (vincristine and vinblastine) and taxanes (paclitaxel), are considered cell cycle-specific antineoplastic drugs. These agents interfere with microtubule function, which is critical during mitosis (cell division). By disrupting microtubules, they specifically target rapidly dividing cancer cells during the M phase of the cell cycle. This selectivity for actively dividing cells makes plant alkaloids cell cycle-specific antineoplastic drugs.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is B

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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?