segmental bronchus

seg·men·tal bron·chus

[TA]
one of the divisions of the lobar bronchus that supplies a bronchopulmonary segment. In the right lung there are commonly ten: in the superior lobe, the apical (B1) segmental bronchus, bronchus segmentalis apicalis (BI) [TA]; posterior (B2) segmental bronchus, bronchus segmentalis posterior (BII) [TA]; and anterior (B3) segmental bronchus, bronchus segmentalis anterior (BIII) [TA]; in the middle lobe, lateral (B4) segmental bronchus, bronchus segmentalis lateralis (BIV) [TA]; and medial (B5) segmental bronchus, bronchus segmentalis medialis (BV) [TA]; in the inferior lobe, superior (B6) segmental bronchus, bronchus segmentalis superior (BVI) [TA], medial basal (B7) segmental bronchus, bronchus segmentalis basalis medialis (BVII) [TA]; anterior basal (B8) segmental bronchus, bronchus segmentalis basalis anterior (BVIII) [TA]; lateral basal (B9) segmental bronchus, bronchus segmentalis basalis lateralis (BIX) [TA]; and posterior basal (B10) segmental bronchus, bronchus segmentalis basalis posterior (BX) [TA]. In the left lung there are commonly nine: in the superior lobe, the apicoposterior (B1+2) segmental bronchus, bronchus segmentalis apicoposterior (BI+II) [TA]; anterior (B3) segmental bronchus, bronchus segmentalis anterior (BIII) [TA]; superior lingular (B4) segmental bronchus, bronchus lingularis superior (BIV) [TA]; and inferior lingular (B5) segmental bronchus, bronchus lingularis inferior (BV) [NA]; in the inferior lobe, superior (B6) segmental bronchus, bronchus segmentalis superior (BVI) [TA]; medial basal (B7) segmental bronchus, bronchus segmentalis basalis medialis (cardiacus) (BVII) [TA], anterior basal (B8) segmental bronchus, bronchus segmentalis basalis anterior (BVIII) [TA]; lateral basal (B9) segmental bronchus, bronchus segmentalis basalis lateralis (BIX) [TA]; and posterior basal (B10) segmental bronchus, bronchus segmentalis basalis posterior (BX) [TA].
Synonym(s): bronchus segmentalis [TA]

segmental bronchus

[segmen′təl]
Etymology: L, segmentum, piece cut off
a secondary bronchus branching from a primary bronchus to a tertiary bronchus.
References in periodicals archive ?
This lodged 'perfectly' in the right middle lobe segmental bronchus, with resultant great difficulty in its retrieval.
Once the tip of the bronchoscope is wedged into the segmental bronchus of interest, the LG is advanced along with the EWC under the guidance provided by the navigation system.
Following a successful registration, the scope with the LG in place is advanced towards the segmental bronchus of interest.
This article reviews the case of a bead lodged in a segmental bronchus.