12 Questions
What is the main difference between B-lymphocytes and T-lymphocytes?
B-lymphocytes are involved in humoral immunity while T-lymphocytes are involved in cellular immunity
What is the primary function of the external body membranes like skin and mucosae?
To prevent physical entry of microorganisms
What is the characteristic of the secretions of the skin?
Acidic pH that inhibits bacterial growth
What is the characteristic of the innate immune system?
It is nonspecific and responds quickly to pathogens
What is the function of the immune system?
To combat pathogens and respond to all foreign substances
What are the mucous membranes involved in?
Lining all body cavities that open to the exterior
What is the function of lysozyme found in saliva and lacrimal fluid?
Destroy bacteria
What is the main function of sticky mucus in the respiratory tract?
Trap microorganisms
What type of cells are macrophages derived from?
Monocytes
What is the function of defensins produced by neutrophils?
Act as antibiotic-like chemicals
What is the term for the process by which phagocytes engulf and digest foreign particles?
Phagocytosis
What is the purpose of opsonization?
To coat foreign particles with proteins
Learn about the two main parts of the immune system - innate and adaptive defenses. Understand how external body membranes, phagocytes, and antimicrobial proteins protect against microorganisms. Discover the roles of B and T lymphocytes in humoral and cell-mediated immunity.
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