Both B and T cells are originally derived from cells of the:
gut-associated lymphoid tissue.
bone marrow.
Thymus.
lymph nodes.
The Correct Answer is B
A. Gut-associated lymphoid tissue (GALT): GALT is a component of the mucosa-associated lymphoid tissue (MALT) and refers to the immune cells found in the gastrointestinal tract. These cells play a significant role in local immune responses in the gut.
B. Bone marrow: The bone marrow is the primary site of blood cell production in the body. It contains stem cells that can differentiate into various blood cells, including B cells. B cells mature in the bone marrow.
C. Thymus: The thymus is an organ located near the heart and is crucial for the development of T cells. T cells mature in the thymus, where they learn to recognize self from non-self antigens.
D. Lymph nodes: Lymph nodes are small, bean-shaped structures that produce and store cells that help fight infection. While they are essential parts of the immune system, B and T cells are not originally derived from lymph nodes.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Allergic reaction: An allergic reaction can manifest in various ways, including rash, itching, and difficulty breathing. However, the specific symptoms described, along with the context of vancomycin administration, point to red man syndrome in this case.
Rhabdomyolysis: Rhabdomyolysis is a condition where damaged muscle tissue breaks down and releases a protein called myoglobin into the bloodstream. This can cause kidney damage, but the symptoms described do not align with rhabdomyolysis.
Stevens-Johnson syndrome: Stevens-Johnson syndrome is a severe skin reaction that can cause skin and mucous membranes to blister, peel, and can be life-threatening. While it can present with rash and other skin symptoms, the symptoms mentioned in the scenario are more characteristic of red man syndrome.
Red man syndrome: As mentioned earlier, red man syndrome is an allergic reaction to vancomycin characterized by flushing, rash, pruritus, and urticaria (hives), along with rapid heart rate and low blood pressure. It is specific to vancomycin and can be prevented or minimized by slowing down the infusion rate and administering antihistamines.
Correct Answer is D
Explanation
A. "The antibiotic I have been taking doesn't work as well as it used to."
This statement shows awareness of decreased effectiveness, which can occur due to drug resistance. Bacteria can become resistant to antibiotics, leading to reduced efficacy of the medication over time.
B. "The bacteria in my body have become resilient."
This statement correctly attributes resistance to the bacteria. Resilience in this context means that bacteria have developed mechanisms to survive the effects of antibiotics, making the treatment less effective.
C. "Over time, an organism that had once been highly sensitive to an antibiotic may become less susceptible, or it may lose drug sensitivity entirely."
This statement accurately describes the concept of drug resistance. Bacteria can lose sensitivity to antibiotics, rendering the drugs ineffective against them.
D. "My body has become resistant to the antibiotic."
This statement is incorrect. It's the bacteria that develop resistance, not the patient's body. Patients don't become resistant to antibiotics; instead, bacteria evolve and adapt, making the drugs less effective against them.
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