Question 1

A multilobed lymphatic organ that functions to process lymphocytes known as T cells and release them into the blood is called:

Accepted Answer

A)  tonsil 
B)  trachea 
C)  thymus gland 
D)  salivary gland 
A)  tonsil 
B)  trachea 
C)  thymus gland 
D)  salivary gland

Question 2

Complement

Accepted Answer

A)  system consists of over 20 proteins that function in a cascade-like manner 
B)  activation results in the onset of fever 
C)  pathway involves factors B, D and P 
D)  all of the above 
A)  system consists of over 20 proteins that function in a cascade-like manner 
B)  activation results in the onset of fever 
C)  pathway involves factors B, D and P 
D)  all of the above

Question 3

Which of the following does not partake in the process of phagocytosis?

Accepted Answer

A)  chemotaxis 
B)  granulation 
C)  adherence 
D)  ingestion 
A)  chemotaxis 
B)  granulation 
C)  adherence 
D)  ingestion

Question 4

During inflammation,permeable capillary walls allow accumulation of fluids near injured cells causing which of the following?

Accepted Answer

A)  calor 
B)  diapedesis 
C)  edema 
D)  blood clotting 
A)  calor 
B)  diapedesis 
C)  edema 
D)  blood clotting

Question 5

Physical barriers of nonspecific defenses

Accepted Answer

A)  include both the cells that line the body surfaces and the chemicals they secrete 
B)  include phagocytes and interferon 
C)  respond to antigens by making thousands of different antibodies 
D)  are part of the host cellular defenses 
A)  include both the cells that line the body surfaces and the chemicals they secrete 
B)  include phagocytes and interferon 
C)  respond to antigens by making thousands of different antibodies 
D)  are part of the host cellular defenses

Question 6

Toll-like receptors can distinguish between

Accepted Answer

A)  nonspecific and specific immune responses 
B)  gram-negative and gram-positive bacteria 
C)  bacteria versus viruses 
D)  two of the above 
A)  nonspecific and specific immune responses 
B)  gram-negative and gram-positive bacteria 
C)  bacteria versus viruses 
D)  two of the above

Question 7

Which of the following proteins activate complement,enhance inflammation and stimulate macrophages to undergo chemotaxis?

Accepted Answer

A)  antiviral proteins 
B)  exogenous pyrogens 
C)  leukocidins 
D)  acute phase proteins 
A)  antiviral proteins 
B)  exogenous pyrogens 
C)  leukocidins 
D)  acute phase proteins

Question 8

Residual body

Accepted Answer

A)  is the remains of parasitic worms killed extracellularly 
B)  consists of a thin layer of cells that secrete mucus 
C)  prevents adherence of a phagocyte and a bacterium 
D)  is material that remains in a phagolysosome after digestion of a microbe 
A)  is the remains of parasitic worms killed extracellularly 
B)  consists of a thin layer of cells that secrete mucus 
C)  prevents adherence of a phagocyte and a bacterium 
D)  is material that remains in a phagolysosome after digestion of a microbe

Question 9

Acute phase response proteins

Accepted Answer

A)  include C-reactive protein (CRP) and mannose-binding protein (MBP) 
B)  bind to and coat the surface of the infectious agent 
C)  destroy abnormal cells 
D)  increase resistance of cells to viral infection 
A)  include C-reactive protein (CRP) and mannose-binding protein (MBP) 
B)  bind to and coat the surface of the infectious agent 
C)  destroy abnormal cells 
D)  increase resistance of cells to viral infection

Question 10

All of the following are components of the nonspecific host defenses except

Accepted Answer

A)  fever 
B)  mucus 
C)  antibodies 
D)  interferon 
A)  fever 
B)  mucus 
C)  antibodies 
D)  interferon

Question 11

Toll-like receptors

Accepted Answer

A)  come from outside the body and stimulate a cytokine 
B)  act nonspecifically to cause cell killing 
C)  are a set of receptors that when activated produce a membrane attack complex 
D)  recognize molecular patterns unique to pathogens 
A)  come from outside the body and stimulate a cytokine 
B)  act nonspecifically to cause cell killing 
C)  are a set of receptors that when activated produce a membrane attack complex 
D)  recognize molecular patterns unique to pathogens

Question 12

The lymphatic system does all of the following except

Accepted Answer

A)  carries plasma to tissue 
B)  transports digested fats to the cardiovascular system 
C)  drains excess fluid from space between cells 
D)  allows for the circulation of cellular defenses 
A)  carries plasma to tissue 
B)  transports digested fats to the cardiovascular system 
C)  drains excess fluid from space between cells 
D)  allows for the circulation of cellular defenses

Question 13

Leukocytes responsible for killing intracellular viruses are

Accepted Answer

A)  Fixed Macrophages 
B)  Basophils 
C)  Granulocytes 
D)  Natural Killer cells 
A)  Fixed Macrophages 
B)  Basophils 
C)  Granulocytes 
D)  Natural Killer cells

Question 14

A leukocyte-endogenous mediator

Accepted Answer

A)  elevates body temperature 
B)  lowers the plasma iron concentration 
C)  decreases the host's metabolic rate 
D)  two of the above 
A)  elevates body temperature 
B)  lowers the plasma iron concentration 
C)  decreases the host's metabolic rate 
D)  two of the above

Question 15

What collection of lymphoid tissue,found in the ileum of the small intestine,is comprised of unencapsulated regions filled with lymphocytes,called lymphoid nodules?

Accepted Answer

A)  gut-associated lymphatic tissues 
B)  mucosa-associated lymphatic tissues 
C)  phagosomes 
D)  tonsils 
A)  gut-associated lymphatic tissues 
B)  mucosa-associated lymphatic tissues 
C)  phagosomes 
D)  tonsils

Question 16

A pocket of tissue that surrounds and walls off the inflammatory agent is called a

Accepted Answer

A)  granuloma 
B)  edema 
C)  fibroblast 
D)  pyrogen 
A)  granuloma 
B)  edema 
C)  fibroblast 
D)  pyrogen

Question 17

Blood contains cells including all of the following except

Accepted Answer

A)  red blood cells 
B)  plasma 
C)  platelets 
D)  lymphocytes 
A)  red blood cells 
B)  plasma 
C)  platelets 
D)  lymphocytes

Question 18

What non-specific immune component is directly responsible for the lysis of invading microorganisms?

Accepted Answer

A)  chemotaxis 
B)  membrane attack complex 
C)  opsonin 
D)  chronic inflammation 
A)  chemotaxis 
B)  membrane attack complex 
C)  opsonin 
D)  chronic inflammation

Question 19

Exogenous and endogenous __________ are fever causing substances

Accepted Answer

A)  prostraglandins 
B)  pyrogens 
C)  cytokines 
D)  bradykines 
A)  prostraglandins 
B)  pyrogens 
C)  cytokines 
D)  bradykines

Question 20

Bacteria that resist digestion by phagocytes use all of the following mechanisms except

Accepted Answer

A)  produce capsule that can resist lysosomal digestion 
B)  block chemokines from reaching phagocytes 
C)  form parasitophorous vacuoles 
D)  produce streptolysisin and leukocidin 
A)  produce capsule that can resist lysosomal digestion 
B)  block chemokines from reaching phagocytes 
C)  form parasitophorous vacuoles 
D)  produce streptolysisin and leukocidin

Exam 16: Innate Host Defenses

A multilobed lymphatic organ that functions to process lymphocytes known as T cells and release them into the blood is called:

Complement

Which of the following does not partake in the process of phagocytosis?

During inflammation,permeable capillary walls allow accumulation of fluids near injured cells causing which of the following?

Physical barriers of nonspecific defenses

Toll-like receptors can distinguish between

Which of the following proteins activate complement,enhance inflammation and stimulate macrophages to undergo chemotaxis?

Residual body

Acute phase response proteins

All of the following are components of the nonspecific host defenses except

Toll-like receptors

The lymphatic system does all of the following except

Leukocytes responsible for killing intracellular viruses are

A leukocyte-endogenous mediator

What collection of lymphoid tissue,found in the ileum of the small intestine,is comprised of unencapsulated regions filled with lymphocytes,called lymphoid nodules?

A pocket of tissue that surrounds and walls off the inflammatory agent is called a

Blood contains cells including all of the following except

What non-specific immune component is directly responsible for the lysis of invading microorganisms?

Exogenous and endogenous __________ are fever causing substances

Bacteria that resist digestion by phagocytes use all of the following mechanisms except

Scope and History of Microbiology

Fundamentals of Chemistry

Microscopy and Staining

Characteristics of Prokaryotic and Eukaryotic Cells

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: the Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Sterilization and Disinfection

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Immunology I: Basic Principles of Adaptive Immunity and Immunization

Immunolgy Ii: Immunological Disorders and Tests

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, lymphatic and Systemic Disease

Diseases of the Nervous System

Environmental Microbiology

Applied Microbiology

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