Which of the following is an example of passive immunity?
The body's response to a vaccine
The transfer of antibodies from a mother to her baby during breastfeeding
The activation of T cells in response to an infection
The production of memory cells after exposure to a pathogen
The Correct Answer is B
Explanation: Passive immunity is the temporary immunity that is acquired from an external source, such as the transfer of antibodies from a mother to her baby through the placenta during pregnancy or through breastfeeding. This type of immunity provides immediate protection but does not result in the production of memory cells.
Incorrect choices:
a. The body's response to a vaccine is an example of active immunity, where the body produces its own antibodies in response to exposure to a weakened or inactive form of a pathogen.
c. The activation of T cells in response to an infection is part of the body's adaptive immune response, contributing to active immunity.
d. The production of memory cells after exposure to a pathogen is also a characteristic of active immunity, as it allows the body to recognize and respond more quickly to future infections with the same pathogen.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Explanation: The immune system is a complex network of cells, tissues, and organs that work together to identify and respond to foreign substances in the body, including bacteria, viruses, parasites, and toxins. Its primary function is to protect the body from infections and other harmful substances.
Incorrect choices:
a. The regulation of body temperature and blood pressure is primarily controlled by the nervous and endocrine systems, not the immune system.
b. Digestion and absorption of nutrients from food are processes mainly controlled by the digestive system, not the immune system.
d. The production of hormones that control bodily functions is primarily the responsibility of the endocrine system, not the immune system.
Correct Answer is A
Explanation
Explanation: B cells are a type of lymphocyte that produces antibodies against specific antigens. When a B cell encounters an antigen that matches its specific receptor, it becomes activated and differentiates into plasma cells, which are responsible for producing large quantities of antibodies that can target and neutralize the antigen.
Incorrect choices:
b. T cells are involved in cell-mediated immunity and do not produce antibodies. They recognize and directly attack infected or abnormal cells in the body.
c. Macrophages are antigen-presenting cells that engulf and process pathogens to present their antigens to other immune cells. They do not produce antibodies themselves but play a role in initiating the immune response.
d. Natural killer cells are a type of lymphocyte involved in the innate immune response. They do not produce antibodies but can directly kill infected or abnormal cells.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.