33 Questions
What is the primary function of the lymphatic system?
To filter pathogens from the blood
What is the role of lymph nodes in the immune system?
They are a major staging area for the development of the immune response
What are the three main components of the lymphatic system?
Vessels, cells, and organs
What is the difference between the innate and adaptive immune responses?
Innate is rapid and non-specific, adaptive is slower and specific
What is the role of B cells in the adaptive immune response?
B cells produce antibodies that bind to specific antigens
Which of the following is not part of the lymphatic system?
Subclavian vein
Where do B cells develop?
Red bone marrow
What is the function of T cells?
Destroying infected cells
Which immune cells are the first line of defense against viruses and some cancers?
Natural Killer cells
Where do T cells mature?
Thymus
Which cells secrete soluble antibodies?
B cells
What is the process of eliminating T cells that might attack one's own body?
Negative selection
Which type of T cell regulates the activity of macrophages and other T cells?
Th1 cells
What is the role of Regulatory T cells in the immune system?
Suppress other T cell immune responses
What is the main function of Dendrites in the immune response?
Bring antigen to regional lymph nodes
What happens during the positive selection of thymocytes?
Thymocytes undergo apoptosis if they don't bind to MHC
Which type of T cell induces apoptosis in target cells like NK cells?
Cytotoxic T cells
Which of the following is NOT a function of lymph nodes?
Filtering blood
What is the main function of lymphoid nodules?
Forming a dense cluster of lymphocytes
Which of the following is NOT a characteristic of the spleen?
Contains a fibrous capsule
What is the function of tonsils?
Developing immunity to oral pathogens
What is the primary location of mucosa-associated lymphoid tissue (MALT)?
Gastrointestinal tract, breast tissue, lungs, and eyes
What is the purpose of germinal centers in lymph nodes and nodules?
Providing sites for rapidly dividing B cells and plasma cells
What is the primary function of bronchus-associated lymphoid tissue (BALT)?
To defend against inhaled pathogens
Which immune response is rapid, nonspecific, and not always effective?
Innate immune response
What is the primary role of natural killer cells in the immune system?
Inducing apoptosis in infected cells
Which protein puts holes in membranes of infected cells?
Perforins
What is the purpose of opsonization in the immune system?
Tagging a pathogen for phagocytosis
Which molecule released by mast cells causes vasodilation and capillary permeability during inflammation?
Prostaglandins
What distinguishes the primary adaptive response from the secondary adaptive response?
Immunological memory presence
What is the function of class I major histocompatibility complex (MHC) molecules?
Express antigens on all human cells
Which type of antigen binds to a receptor on a pathogen?
Protein antigen
What is the primary role of cytokines in the immune system?
Allow communication between nearby cells
Explore the key concepts related to the lymphatic and immune systems in Chapter 21.1, including the functions of the immune system, lymphatic system, lymph composition, and the role of lymph nodes in immune response.
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