Surface Barriers
True or False: The skin is a surface barrier.
True
Abnormally high body temperature in response to invading microorganisms.
What is fever?
The fourth cardinal sign of inflammation, after redness, heat, and swelling.
What is pain?
Lymphocytes that develop fully in the "B"one marrow are known as this type of cell.
What are B cells?
Lymphocytes that develop fully in the "T"hymus are known as this type of cell.
What are T cells?
Surface barriers are part of this division of the immune system.
What is innate system?
The molecules that "interfere" with viral infection by warning neighboring cells when they are infected.
What is interferon?
The process of "eating" or "ingulfing" a substance.
What is phagocytosis?
An antigen has this quality, where they react with products of B cells and antibodies.
What is reactivity?
These cells present antigens to T cells.
What are antigen presenting cells?
These hair-like structures in the upper respiratory tract sweep dust and bacteria-laden mucus toward the mouth.
What are cilia?
Fever causes the liver and spleen to sequester iron and this element to hinder microorganism growth.
What is zinc?
A type of T-cell selection that requires recognition of self-MHC.
What is positive selection?
The branch of the adaptive immune system that uses antibodies and B cells.
What is humoral immunity?
The branch of the adaptive immune system that uses T cells.
What is cellular immunity?
The skin acidity is between a pH of 3 and this.
What is pH 5?
Programmed cell suicide, induced by Natural Killer Cells.
What is apoptosis?
Chemical secreted by leukocytes and macrophages exposed to bacteria and other foreign substances that causes fever.
What are pyrogens?
These B cell clones make antibodies.
What are plasma cells?
This molecule is released by T cells to fragment target cell's DNA.
What are granzymes?
What is lysozyme?
The process by which neutrophils flatten and squeeze out of capillaries.
What is diapedesis?
A type of pneumonia that may be seen as an opportunistic infection in an AIDS patient.
What is pneumocystis pneumonia?
The class of antibody that causes mast cells and basophils to release histamine.
What is IgE?
A graft taken from another animal species.
What are xenografts?