segmental bronchus

(redirected from Tertiary bronchus)
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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]
References in periodicals archive ?
The wall of the tertiary bronchus had openings for the atria and respiratory capillaries.
The bronchi were divided into the primary, secondary and tertiary bronchus, and they formed an interconnected labyrinthine structure.
The epithelium of tertiary bronchus was incomplete since it had openings for the atria and respiratory capillaries, and the epithelial cells were cone, oval or irregular in shape, the nuclei were round at the middle of the cells (Fig.
Ghrelin-ip cells were located among the tertiary bronchus mucosal epithelial cells, respiratory capillary epithelial cells and macrophages, and they tended to be restricted to a single cell with different sizes (Fig.
chrysaetos (Feng et al., 2009b), they were arranged radially around the tertiary bronchus. These results indicate species differences in lung tissue.
In this study, ghrelin-ip cells were found within the tertiary bronchus mucosal epithelial cells, respiratory capillary epithelial cells and macrophages.
It has been demonstrated that an osmotic plate structure is distributed over the epithelium and surfaces of tertiary bronchus, atria and respiratory capillaries, whose function is similar to pulmonary surfactant of livestock, which plays significant roles in pulmonary mechanics, surfactant in airways, pulmonary vessels and blood flow (Wagner et al., 1996; Bjorklund et al., 1997; Im Hof et al., 1997; Wada et al., 1997).