1 The Human Airway (with thanks to David N. Hager, MD, PhD Johns Hopkins University) The Upper Airway • Nasopharynx • Oropharynx • Larynx – voice – airflow Gray, Anatomy of the Human Body Trachea • Length: 9-15 cm • Internal diameter: 18-22 mm • Outer diameter: 21-27 mm • 18-22 cartilaginous rings • Becomes intrathoracic at 6 th cartilaginous ring • Bifurcates at T4 (sternal angle)
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LIDPEG: Sugars vs Asthma & COPD - The Upper Airway · 2012-10-31 · Bronchial circulation: – two left bronchial arteries arise from the thoracic aorta ... Asthma and COPD (emphysema)"
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Transcript
1
The Human Airway
(with thanks to David N. Hager, MD, PhD Johns Hopkins University)
The Upper Airway
• Nasopharynx • Oropharynx • Larynx
– voice – airflow
Gray, Anatomy of the Human Body
Trachea • Length: 9-15 cm • Internal diameter: 18-22 mm • Outer diameter: 21-27 mm • 18-22 cartilaginous rings • Becomes intrathoracic at 6th
cartilaginous ring • Bifurcates at T4 (sternal
angle)
2
Bronchi • Right: main bronchus
– 2cm long, I.D. 10-16mm – more vertical than left main bronchus
(in adults) – Right upper lobe – Bronchus intermedius – Middle lobe – Lower lobe
• Left: main bronchus – 4-5cm long – slightly smaller than right (I.D. 8-14mm)