PN 1003 SESSION 2&3 - ALTERATION TO CELLS
(INFLAMMATION, INFECTION) & STRESSORS EXAM
QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS GRADED A++
barrier defenses, cellular defenses, inflammatory response, immune response
4 main body defenses:
skin, mucous membranes, gastric acid, major histocompatibility complex
4 types of barrier defenses
facilitates the body's ability to distinguish between self-cells and foreign cells by
producing antigens located on the cell membrane; the body recognizes these
cells as being self-cells
major histocompatibility complex
lines the areas of the body that are exposed to external influences ie. GI tract,
respiratory tract, GU tract
mucous membranes
mucus (traps/inactivates invaders) and cilia (sweeps captured pathogens away)
2 features of the mucous membrane that help protect the body from invasion
, 1. provides a physical barrier to the environment 2. surface glands secrete
chemicals that destroy/repel pathogens 3. top layer falls off daily (difficult for
pathogens to colonize) 4. normal flora helps destroy pathogens
4 ways the skin protects tissues/organs
destroys potential pathogens that are ingested/swallowed
how does gastric acid protect the body?
mononuclear phagocyte system (MPS)
Name of the cellular defense system that encompasses the inflammatory process and
immune systems
thymus gland, lymphocytes, lymphoid tissue, leukocytes, chemical mediators
what are the 5 components of the MPS
where T cells are differentiated
thymus gland
white blood cells with large, varied nuclei; can be B cells or T cells
lymphocytes
where WBC are formed
lymphoid tissue
white blood cells; can be neutrophils, basophils or eosinophils
leukocytes
interferons (prevent viral replication), interleukins (communicates with other
leukocytes), tumor necrosis factor (inhibits tumor growth)
chemical mediators
(INFLAMMATION, INFECTION) & STRESSORS EXAM
QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS GRADED A++
barrier defenses, cellular defenses, inflammatory response, immune response
4 main body defenses:
skin, mucous membranes, gastric acid, major histocompatibility complex
4 types of barrier defenses
facilitates the body's ability to distinguish between self-cells and foreign cells by
producing antigens located on the cell membrane; the body recognizes these
cells as being self-cells
major histocompatibility complex
lines the areas of the body that are exposed to external influences ie. GI tract,
respiratory tract, GU tract
mucous membranes
mucus (traps/inactivates invaders) and cilia (sweeps captured pathogens away)
2 features of the mucous membrane that help protect the body from invasion
, 1. provides a physical barrier to the environment 2. surface glands secrete
chemicals that destroy/repel pathogens 3. top layer falls off daily (difficult for
pathogens to colonize) 4. normal flora helps destroy pathogens
4 ways the skin protects tissues/organs
destroys potential pathogens that are ingested/swallowed
how does gastric acid protect the body?
mononuclear phagocyte system (MPS)
Name of the cellular defense system that encompasses the inflammatory process and
immune systems
thymus gland, lymphocytes, lymphoid tissue, leukocytes, chemical mediators
what are the 5 components of the MPS
where T cells are differentiated
thymus gland
white blood cells with large, varied nuclei; can be B cells or T cells
lymphocytes
where WBC are formed
lymphoid tissue
white blood cells; can be neutrophils, basophils or eosinophils
leukocytes
interferons (prevent viral replication), interleukins (communicates with other
leukocytes), tumor necrosis factor (inhibits tumor growth)
chemical mediators
