Download A Field Guide to the Atlantic Seashore by Kenneth L. Gosner PDF

By Kenneth L. Gosner

Более one thousand иллюстраций, сгруппированных по визуальному сходству, демонстрируют виды морских растений и животных атлантического побережья Северной Америки от залива Фанди до мыса Гаттерас. Путеводитель содержит советы, как находить различные виды, используя информацию по географическому распространению, местообитанию, сезону активности и климату.
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Rings were confined to the central part including the trachea, the main bronchi, the antero-superior wall of the right middle and left upper lobe bronchi and in some cases the proximal part of the right upper lobe bronchus. The Cartilaginous Skeleton of thc Bronchial Tree 49 Fig. 40. The boundaries between the ringed and the plated parts of the bronchial tree. Anterior half Owing to the size, the shape and the capacity of rings to fuse, which grew more intense as the main bronchi grew longer, this central part was found to be a stiff, solid and rigid apparatus.

22E), although lobar cartilages showed a tendency to interconnect between themselves and produce compound patterns. The first lobar ring was found to fuse with the last main bronchial one in 46% of cases (Fig. 23A), with the soon to be described secondary carinal cartilage in 12% (Fig. 22A) and with both in 17% of cases (Fig. 22C). The Cartilaginous Skeleton of the Bronchial Tree 39 Fig. 22A-E. Cartilages in the left upper lobe bronchus and its junction to the main bronchus. A prep. 55, \2, aged 66, frontal cut, anterior half, the lobar bronchus contains two rings, fused together and to the secondary carina I cartilage, there is no fusion between main bronchial and adjacent cartilages.

F posterior half, apical lower segmental bronchus cut lengthwise. G prep. 77, lateral cut, lower lobe bronchus spread cut shows rare circular cartilage around orifice to apical lower bronchus. H prep. 93, lateral out, the tertiary carinal cartilage to the apical lower segmental bronchus shows long extension which may be plate fused to it 4. The Orifice to the Apical Lower Segmental Bronchus The cartilages surrounding this orifice were u-shaped in 50%, ii-shaped in 23 %, C-shaped in 12 %, 'ii-shaped in 2 % and O-shaped in 4 % of cases.

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