chapter four Flashcards
pathogenic microorganisms
microorganisms that produce disease
nonpathogenic microorganisms
microorganisms that do not produce disease
which immunity is responsible for bacteria, viruses, and fungi
cell-mediated immunity (t cells)
what is impetigo
bacterial skin infection
what is impetigo caused by
staphylococcus aureus
what is tonsillitis and pharyngitis
inflammation of tonsils pharyngeal mucosa
what causes tonsillitis and pharyngitis
a beta - hemolytic streptococci
what other conditions are caused by tonsillitis and pharyngitis
scarlet fever, pastia lines, strawberry tongue, and rheumatic fever
what is military tuberculosis
bacteria from tuberculosis is involving the organs
what is scrofula or tuberculous lymphadenitis
bacteria that caused the submandibular and cervical lymph nodes to swell
what is used to test tuberculosis
a skin test with antigen called ppd (purified protein derivative)
what is syphilis caused by
treponema pallidum
what are the three stages of syphilis
primary, secondary, tertiary
chancre
the lesion that forms during the primary stage, highly infectious and appears at the sight where the bacteria entered
when does the second stage of syphilis occur
about 6 weeks after the primary
mucous patches
diffuse eruptions of skin and mucosa membrane, most infectious, looks like a rash
when does the tertiary stage occur in syphilis
years after the initial infection if the infection has not be treated
gumma
non infectious, most common on tongue and palate, becomes an ulcer, may cause damage to palate bone or tongue
what does nug stand for
necrotizing ulcerative gingivitis
what is pericoronoitis
an inflammation of the mucosa around the crown of a partially erupted impacted tooth
what is candidiasis
result of an overgrowth of the yeastlike fungal organism
what is the most common oral fungal infection
candidiasis
what are the types of candidiasis
pseudomembranous, erythematous, denture stomatitis, chronic hyperplastic candidiasis, angular cheilitis
pseudomembranous candidiasis
whtie curd-like material that can be wiped off
erythematous candidiasis
red often painful mucosa
denture stomatitis
red mucosa limited by full or partial denture, common on palate or maxillary tuberosity
chronic hyperplastic candidiasis
white lesion that does not wipe off
angular cheilitis
fissuring at the labial commissures
what are the lesions that are caused by hpv
verruca vulgaris, condyloma acuminatum and focal epithelial hyperplasia
verruca vulgaris
common wart, hpv 2, lips are most common
condyloma acuminatum
hpv 6 and 11, bulbous masses
multifocal epithelial hyperplasia
whitish to pale pink nodules around the mucosa, hpv 13 and 32
what are the two forms of herpes simplex virus
type one and type two
what infection is caused by type one herpes simplex virus
oral
what infection is caused by type two herpes simplex virus
genital
primary herpetic gingivostomatitis
oral disease caused by initial infection with the herpes simplex virus
what is the most common recurrent type of herpes simplex infection
herpes labialis (vermillion boarder of lips)
what causes chickenpox and shingles
varicella zoster virus or human herpesvirus 3
what does epstein barr virus cause
infectious mononucleosis, hairy leukoplakia, ebv ulcer
