What is one of the MAIN functions of the lymphatic system?
Movement of blood through the body
Decreases the spread of disease
Control hormone levels
Control electrolyte levels
The Correct Answer is B
A. Movement of blood through the body:
This is the function of the cardiovascular system, not the lymphatic system.
B. Decreases the spread of disease:
The lymphatic system helps trap and destroy pathogens through lymph nodes and the immune response, reducing the spread of infection.
C. Control hormone levels:
Hormone levels are regulated by the endocrine system.
D. Control electrolyte levels:
Electrolyte balance is primarily maintained by the kidneys and endocrine organs like the adrenal glands.
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Related Questions
Correct Answer is D
Explanation
A. Allergic reaction:
Allergic reactions are typically associated with overactive immune responses, not decreased T and B cell function.
B. Increase in antibodies:
Antibody production actually declines with age due to reduced B cell function.
C. Cancer:
Decreased immune surveillance can contribute to cancer risk, but the most direct consequence of T and B cell decline is susceptibility to infections.
D. Infections:
Reduced activity of T and B cells impairs the immune response, making older adults more prone to infections.
Correct Answer is C
Explanation
A. Specific immunity: B cells, T cells:
B cells and T cells are part of the adaptive (specific) immune system.
B. Mechanical barriers: skin, mucous membrane:
These are physical defenses against infection.
C. Chemical barriers: tears, saliva, stomach acid, B cells, T cells:
Tears, saliva, and stomach acid are chemical barriers. B cells and T cells are not chemical barriers; they are components of specific immunity.
D. First line of defense: skin, mucous membrane, tears, sneezing:
These are all part of the body's innate first-line defenses.
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