The bronchi and pulmonary blood-vessels : their anatomy and nomenclature, with a criticism of Professor Aeby's view on the bronchial tree of mammalia and of man / by William Ewart.
- William Ewart
- Date:
- 1889
Licence: Public Domain Mark
Credit: The bronchi and pulmonary blood-vessels : their anatomy and nomenclature, with a criticism of Professor Aeby's view on the bronchial tree of mammalia and of man / by William Ewart. Source: Wellcome Collection.
Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.
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![Both divisions of the recm-rent bronchus are freely provided with hranch- Deep and lets which are supplied to the intra-pulmonary tissue in every direction, and ^,anchlets^ with sub-pleural branchlets for the aeration of superficial lobules. Distrihatmi of the Bight Posterior Ascending Apical Bronchus. Posterior Ascending Apical Bronchus.—(See fig. i o, external to Posterior line C; and fig. ii, in square H ij.) This stem rises vertically, with very ap'icaf'° slight inclination outwards, in continuation of the ascending apical stem, for (iv-oss). a distance of i'2 cm.; and it divides into the axicd apical trunk and the apieaTJv'^ posterior cqriccd, the latter being slightly internal as well as posterior in its '-'^^^^ j direction. (v. esss). The Axial Apical Bronchus needs no description, as regards direc- Axiaiapicai tion, since this trunk is the unbroken ^prolongation upwards of the main ^axM^''^'^' apical stem. Its first bifurcation takes place at the level of the origin of the H^}'^^}, , ^ . iuterlobar inward tracheal branches and of the T'^^^^^pt'*^^ l^osterior branch from the (vj. essse). mid-pectoral apical. From this bifurcation arises outwards the Axial Apical Interlobar Bronchus, a X-^^li^ped tube with flattened distribu- tion, which faces (across the sterno-scapular inter-bronchial sulcus) the axillary apical trunk. In fig. i i the small y-shaped bifurcation is seen (in right lower corner of square H ij) lying almost vertically across a shaded tube. An anterior ascending deep-jmlmonecri/ hranch arises from the continuation Deep-pul- of the trunk and breaks the lona: interval (2*i cm.) between the last-named ?i°!i'T . . ° ^ ^ froni tlio bifurcation and the ensuing one. axiaiapicai. The branch given up from the continuation of the stem, the Outer Outer cen- ] Central Apical has a direction upwards and outwards, and after supplying gi'^ij,',) I an outer dcen-vulmonaru hranch, ends at the apex by means of an anterior -Axiaiapicai -, . 1 • , • ,• (vij.es.ss.ss).J and of a posterior termination. Outer deep The continucdion of the axial apiccd swerves very slightly inwards, beyond pulmonary, this bifurcation, and presents an inner decp-pulmonarg^ symmetrical with that derived from the outer central bronchus. The last bifurcation takes place high up into the Axial Terminal Axial ter- Bronchus and the Posterior Central Apical, a slightly curved branch ssssli)'^' which lies behind the anterior central apical but has an opioosite direction Pfsteiior and curvature. Both bronchi end by means of the customary sub-plenral apical (viij. forkings. The Posterior Apical Bronchus (fig. 11, left upper corner of Posterior square H iij) rises upwards and slightly backwards for a distance of i cm. (^'Tssp) ' Its inner and its outer branch respectively supply the posterior-inner surface Pogtp,.;,,;. and the jDosterior surface of the apex. To the first of these the designation tracheal posterior tracliml rightly belongs since this bronchus is contained in the Apical ^ transverse body-plane which also contains the trachea, and therefore directly gp-^i^tg faces the trachea. The other, larger, branch with strong outward slope is (vj. esspe).j](https://iiif.wellcomecollection.org/image/b21518701_0133.jp2/full/800%2C/0/default.jpg)
