Respiratory zone

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Respiratory zone

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The respiratory zone is the site of O₂ and CO₂ exchange with the blood.

The respiratory bronchioles and the alveolar ducts are responsible for 10% of the gas exchange. The alveoli are responsible for the other 90%.

The respiratory zone represents the 16th through the 23rd division of the respiratory tract.

External links

Anatomy: Lower RT respiratory system (TA A06.3–5, TH H3.05.02, GA 11.1084)

TB tree

Trachea	Tracheal rings · Annular ligaments of trachea · Carina

Bronchus	main bronchus (right, left) · lobar/secondary bronchi (eparterial bronchus) · segmental/tertiary bronchi

Lungs

General	Left lung/Right lung · Base/Apex · Root/Hilum Superior lobe · Lingula of left lung/Middle lobe of right lung · Inferior lobe borders: Anterior border (Cardiac notch) · Posterior border · Inferior border surfaces: Costal surface · Mediastinal surface (Cardiac impression) · Diaphragmatic surface fissures: Oblique fissure · Horizontal fissure

BP segment	Bronchiole: Conducting zone (Terminal bronchiole) · Respiratory zone (Respiratory bronchiole · Alveolar duct · Alveolus · Blood-air barrier)

Cells	Pneumocyte (Type I pneumocyte, Type II pneumocyte) · Clara cell · Goblet cell

M: RES

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noco(c, p)/cong/tumr, sysi/epon, injr

proc, drug(R1/2/3/5/6/7)

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