TCDHA Perio 1 Final question n answers 2023/2024

TCDHA Perio 1 Finalimmune system - correct answer complex body defines system- protects body against bacteria, viruses, toxins and parasites innate system - correct answer -present at birth -not antigen specific -present at all times -does not improve with repeated exposure to infectious agent adaptive immune system - correct answer -develops throughout life -antigen specific -lag time between infection and response -memory develops- provides lifelong immunity to reinfection immune response - correct answer defend the life of the individual - by identifying foreign substances in body and developing defence against them host response - correct answer The way that an individual's body responds to an infection leukocytes - correct answer -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 - correct answer process by which leukocytes engulf and digest microorganisms polymorphonuclear leukocytes - correct answer (PMNs) -neutrophils - rapid responders- 1st line of defence - capture/ destroy bacterial invaders -short-lived what attracts leukocytes to an infection site - correct answer PMNs are attracted to bacteria by chemotaxis lysosomes - correct answer strong bactericidal and digestive enzymes in PMN -perio pathogens are effectively destroyed by PMNs monocytes/macrophages - correct answer 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 - correct answer small leukocytes- help defend body 2 types: B cells, t cells B lymphocytes - correct answer B Cells makes antibodies and pour into bloodstream 2 types: plasma/ memory b cells antibodies - correct answer y shaped proteins y binds w outside of b celll -other end of y binds to a MO and kills it