Which of the following statements best describes the primary function of the immune system?
The immune system is responsible for regulating body temperature and blood pressure.
The immune system is involved in digestion and absorption of nutrients from food.
The immune system is responsible for recognizing and defending against foreign invaders, such as pathogens and toxins.
The immune system is involved in producing hormones that control various bodily functions.
The Correct Answer is C
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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Explanation:Innate immunity. Innate immunity is the body's first line of defense and provides immediate protection against infections without prior exposure to the pathogen. It includes physical barriers, such as the skin, and various cellular and chemical components.
Incorrect choices:
a. Adaptive immunity is the acquired immunity that develops after exposure to a specific pathogen or vaccination. It takes some time to mount a response and produce antibodies or memory cells.
b. Humoral immunity is a component of adaptive immunity that involves the production of antibodies by B cells to neutralize pathogens.
d. Cell-mediated immunity is another component of adaptive immunity, where T cells directly attack infected or abnormal cells.
Correct Answer is D
Explanation
Explanation: Passive immunity. Passive immunity is acquired when preformed antibodies are transferred from one individual to another. In this case, the mother's antibodies are transferred to her baby through breast milk, providing temporary protection against certain infections.
Incorrect choices:
a. Active immunity is acquired when the immune system is exposed to a pathogen or vaccination, leading to the production of memory cells and long-term protection.
b. Innate immunity is the body's first line of defense against infections and is not transferred from the mother to the baby but rather present from birth.
c. Adaptive immunity is another term for acquired immunity and involves the production of memory cells after exposure to a specific pathogen or vaccination. It is not transferred through breast milk.
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