A&P Chapter 21: Lymphatic System
Terms in this set (38)
Pyrogens act by increasing the set point for body temperature in the thalamus.
Which of the following cannot act as antigen-presenting cells?
Cellular (cell-mediated) immunity is effective against __________.
The immune system spans nearly every organ and tissue in the human body.
Antigen-presenting cells usually display processed antigens to T cells in the _____________.
Antibodies and complement can work together, linking innate and adaptive immunity.
__________ constitutes about 80% of circulating antibodies in plasma.
Red bone marrow is the point of origin of all immune cells of the lymphatic system.
Which of the following is not an example of lymphatic tissue?
Which is the correct sequence of events in the humoral immune response?
Antigen recognition → antigen presentation → clonal selection → differentiation → attack
__________ lacks the capacity to remember a pathogen or react differently to it in the future, whereas __________ utilizes memory cells to adapt to a given pathogen and ward it off more easily in the future.
Innate immunity; adaptive immunity
The __________ tonsils are the largest, and their surgical removal (tonsillectomy) used to be one of the most common surgical procedures performed in children.
Most common allergies are the result of __________.
Type I (acute) hypersensitivity
__________ participate in both innate immunity and the immune response.
Helper T (TH) cells
Naive T cells can synthesize antibodies.
The serum used for emergency treatment of snakebites stimulates __________ immunity.
__________ are the largest of the lymphatic vessels, and they empty into the __________.
Collecting ducts; subclavian veins
__________ is not a cardinal sign characteristic of inflammation.
Bronchoconstriction, dyspnea, and widespread vasodilation are all characteristics of __________.
Before B cells secrete antibodies, they differentiate into _________.
Complement C3b protein coats bacteria and stimulates phagocytosis by __________ during a process called __________.
neutrophils and macrophages; opsonization
Cytotoxic T cells respond only to antigens bound to MHC-I proteins.
One characteristic of the immune response is specificity. This means that __________.
Immunity is directed against a particular pathogen
The lymphatic system is involved in circulation, immunity, and nutrient absorption.
Lymph is similar to blood plasma, but very low in __________.
A pyrogen is a substance that causes __________.
___________ employ a "respiratory burst" to produce bactericidal chemicals such as hydrogen peroxide (H2O2) and hypochlorite (HClO).
Interleukins are chemical signals by which immune cells communicate with each other.
Removal of the __________ would be more harmful to a one-year-old child than an adult.
T cells achieve immunocompetence in the __________.
A person who is HIV-positive and has a helper T (TH) cell count lower than __________ has AIDS.
Cellular immunity uses B cells and humoral immunity uses antibodies.
__________ are secreted by cells infected with viruses, alerting neighboring cells and protecting them from becoming infected.
Most Memory B cells are found circulating in the lymph.
Interferons are secreted in response to bacterial infections.
The __________ show(s) a remarkable degree of degeneration (involution) with age.
Which of these cellular agents does not participate in inflammation?
Cytotoxic T cells
Memory T cells can be up to __________ old.