title: Anatomy, histology, and pathology of the cardiac conduction system: Part I.
abstract: Normal anatomic and histologic features of the sinus node, atrial myocardium, and interatrial conduction of the cardiac impulse are reviewed. The controversy surrounding atrial conduction via specialized atrial cells versus specific internodal tracts (between sinus and atrioventricular nodes) is discussed.
authors.affiliation: Cardiovascular Pathology Registry, Indianapolis, Indiana.
authors.forename: B F
authors.initials: BF
authors.lastname: Waller
authors.forename: L E
authors.initials: LE
authors.lastname: Gering
authors.forename: N A
authors.initials: NA
authors.lastname: Branyas
authors.forename: J D
authors.initials: JD
authors.lastname: Slack
mesh_terms: D000367:Age Factors; D006329:Heart Conduction System / Q000033:anatomy & histology* / Q000473:pathology; D006801:Humans; D012016:Reference Values