Page 256 - Ultimate Visual Dictionary (DK)

THE HUMAN BODY

Respiratory BRONCHIOLE AND ALVEOLI
Bronchial nerve

Visceral
system Mucosal gland Branch of
pulmonary vein
cartilage
Terminal bronchiole
THE RESPIRATORY SYSTEM supplies the Bronchial vein
Branch of
oxygen needed by body cells and carries
pulmonary
off their carbon dioxide waste. Inhaled artery
air passes via the trachea (windpipe)
Elastic
through two narrower tubes, the bronchi,
fibers
to the lungs. Each lung comprises many Interalveolar
fine, branching tubes called bronchioles septum
that end in tiny clustered chambers
called alveoli. Gases cross the thin Alveolus
alveolar walls to and from a network of tiny blood vessels.
Intercostal (rib) muscles and the muscular diaphragm below Connective
the lungs operate the lungs like bellows, drawing air in and tissue
forcing it out at regular intervals.
Capillary network Epithelium

SEGMENTS OF BRONCHIAL TREE
Apical
Apical Posterior
Anterior
Upper
Upper lobe of
lobe of Superior
right lung lingular left lung
Posterior Inferior
lingular
Anterior

Middle
lobe of Lateral
right lung
Medial

Apical
Anterior Medial
basal basal
Lower Lateral Anterior
lobe of basal basal Lower
right lung lobe of
left lung
Medial Lateral
basal basal
Apical
Posterior
Posterior basal basal
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