قصبة رئيسية يسرى

لوحة تشريحية لجهاز التنفس
مسالك هوائية

قصبة رئيسية يسرى (بالإنجليزية: Left main bronchus )‏ هي عباره عن قَصَبَة التي تنقل الهواء إلى الرئة اليسرى. القصبة الرئيسية اليسرى تتفرع إلى قَصَبتين فصيتين. هي اضيق وأطول من القصبة الرئيسية اليمنى، حيث يبلغ طولها 5 سم وتدخل الرئة في مستوى الفقرة الصدرية السادسة. تتجه تحت القوس الأبهر ثم أمام المريء والقناة الصدرية والأبهر النازل. الشريان الرئوي اليسري يرقد فوقها في البداية ومن ثم امامها.

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Тобыш Характеристика Длина 393 км Бассейн 6610 км² Водоток Исток   (Т) (B)    • Координаты 66°41′57″ с. ш. 51°40′25″ в. д.HGЯO Устье    (Т) (B) Цильма  • Местоположение д. Тобыш  • Координаты 65°29′35″ с. ш. 51°00′36″ в. д.HGЯO Располож�...