TCDHA Perio 1 Final Questions and Correct Answers the Latest Update and Recommended Version
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Course
TCDHA
Institution
TCDHA
immune system
• complex body defines system- protects body against bacteria, viruses, toxins and
parasites
innate system
• -present at birth
• -not antigen specific
• -present at all times
• -does not improve with
• repeated exposure to infectious agent
adaptive immune system...
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TCDHA Perio 1 Final Questions and
Correct Answers the Latest Update and
Recommended Version
immune system
• complex body defines system- protects body against bacteria, viruses, toxins and
parasites
innate system
• -present at birth
• -not antigen specific
• -present at all times
• -does not improve with
• repeated exposure to infectious agent
adaptive immune system
• -develops throughout life
• -antigen specific
• -lag time between infection and response
• -memory develops- provides lifelong immunity to reinfection
immune response
• defend the life of the individual - by identifying foreign substances in body and
developing defence against them
host response
• The way that an individual's body responds to an infection
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leukocytes
• -act like independent single-cell organisms
• -can move through tissues and capture micro-organisms on their own
• -2 types important in perio disease: PMNs, Moncytes/macrophages
phagocytosis
• process by which leukocytes engulf and digest microorganisms
polymorphonuclear leukocytes
• (PMNs)
• -neutrophils
• - rapid responders- 1st line of defence
• - capture/ destroy bacterial invaders
• -short-lived
what attracts leukocytes to an infection site
• PMNs are attracted to bacteria by chemotaxis
lysosomes
• strong bactericidal and digestive enzymes in PMN
• -perio pathogens are effectively destroyed by PMNs
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• monocytes:in the bloodstream
• macrophages: in the tissues
• -slower to arrive at infection site than PMNs
• -surround/destroy bacteria
• -long-lived cells in chronic inflammation
lymphocytes
• small leukocytes- help defend body
• 2 types: B cells, t cells
B lymphocytes
• B Cells
• makes antibodies and pour into bloodstream
•
• 2 types: plasma/ memory b cells
antibodies
• y shaped proteins
• y binds w outside of b celll
•
• -other end of y binds to a MO and kills it
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