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61 terms

Micro Module 11

STUDY
PLAY
Which of the following is involved in initializing inflammation?
Basophil
Normal microbiota provide protection from infection by all of the following except ____.
They produce lysozyme
Innate immunity is
The body's defenses against any kind of pathogen.
Neutrophils with defective lysosomes are unable to ____.
produce toxic oxygen products
The function of the "ciliary escalator" is to ____.
remove microorganisms from the lower respiratory tract
The mechanism of action of interferon includes all of the following except ____.
it inactivates viruses
Which of the following is not a characteristic of inflammation?
Fever
Which of the following does not provide protection from phagocytic digestion?
None of the above
Adherence of phagocytes may be accomplished by all of the following except
Lysozyme
Which of the following is not an effect of complement activation?
Interference with viral replication
In a bacterial infection, what type of white blood cell is the first to arrive at the site of infection?
neutrophils
Crisis is a sign that ____.
body temperature is falling
Which of the following is not a physical factor to protect the skin and mucous membranes from infection?
Lysozyme
What direct effect do histamines and leukotrienes have on capillaries?
They allow capillary walls to open and become leaky.
Which of the following exhibits highest phagocytic activity?
neutrophils
Which of the following white blood cells is most likely to be involved in the destruction of a tumor cell?
Which of the following white blood cells is most likely to be involved in the destruction of a tumor cell?
Lymphocytes
Why is vasodilation important to tissue repair?
It allows for an increased delivery of oxygen, nutrients, and phagocytes to the site of damage.
Which of the following statements about interferons is not true?
They are virus specific.
The process by which a phagocyte moves toward a chemical signal at the site of an infection is called ____.
chemotaxis
Crisis is a sign that ____.
body temperature is falling
Which of the following is involved in resistance to parasitic helminths?
Eosinophil
If a new bacterial pathogen entered a human body through an accidental needle stick, the first cell that would try to kill the pathogen would likely be ____.
a phagocyte
Adherence of phagocytes may be accomplished by all of the following except
Lysozyme
Which of the following is involved in initializing inflammation?
Basophil
Which cells directly attack abnormal cells in the body?
Cytotoxic T cells
In a bacterial infection, what type of white blood cell is the first to arrive at the site of infection?
neutrophils
What is the effect of interferons?
Interferes with viral multiplication.
Chlamydia can prevent the formation of the phagolysosome, and therefore Chlamydia can ____.
avoid being digested
Which of the following is not an effect of complement activation?
Interference with viral replication
First line defenses have what aspect in common with each other?
They are physical barriers against invading pathogens.
Which of the following is not a function of inflammation?
None of the above
What is a phagolysosome?
The structure that results from the fusion of a phagosome and a lysosome.
Which of the following is not a chemical factor to protect the skin and mucous membranes from infection?
...
Which of the following is involved in adaptive immunity?
Lymphocyte
Which of the following is not a physical factor to protect the skin and mucous membranes from infection?
Lysozyme
Which one of the following is not an effect of fever?
Kills pathogens.
What complement result involves the use of phagocytes?
Chemotaxis and opsonization
Mucous membranes are a part of ____.
innate defense
All of the following can be determined from a differential white blood cell count except _____.
the numbers of red blood cells
Which of the following is not a physical factor to protect the skin and mucous membranes from infection?
Lysozyme
Inflammation is a ____ response to infection.
local
Which of these cells is not phagocytic?
NK cells
Which of the following does not provide protection from phagocytic digestion?
None of the above
Chills is a sign that ____.
body temperature is rising
Which of the following is found normally in serum?
Complement
What is the role of opsonins?
They create "handles" that make it easier for the pseudopods of phagocytes to attach to the microbe invader.
All of the following can be determined from a differential white blood cell count except _____.
the numbers of red blood cells
Which of the following is not a characteristic of inflammation?
Fever
Bacteria are first ingested into a _____ during phagocytosis.
phagosome
Which of the following is an effect of opsonization?
Increased adherence of phagocytes to microbes.
Which is not an outcome of complement activation?
Fever
Macrophages arise from which of the following?
Monocyte
Normal microbiota provide protection from infection by all of the following except ____.
They produce lysozyme
Which of the following is involved in adaptive immunity?
Lymphocyte
Both the innate and adaptive defenses of the immune system work to prevent ____.
the penetration and colonization by pathogens, and the diseases they cause
Which of the following is involved in resistance to parasitic helminths?
Eosinophil
If a new bacterial pathogen entered a human body through an accidental needle stick, the first cell that would try to kill the pathogen would likely be ____.
a phagocyte
Which is not an outcome of complement activation?
Fever
What complement result involves the use of phagocytes?
Chemotaxis and opsonization
Which of these is not a characteristic of innate immunity?
Has memory component
Which of the following does not provide protection from phagocytic digestion?
None of the above