Conducting and respiratory zones

0.05 MB·English

by  Kindred Grey

The airways

Trachea

) Primary bronchi
e
c (left and right)
a
e p
n s
o
z d
a Secondary (lobar) bronchi
g e
n d (2 left and 3 right)
ti l
c a
u c
d mi
n Tertiary (segmental)
o o
C t bronchi
a
n (10 right, 8 left)
a

(

Terminal bronchioles
(<1 mm)
Respiratory bronchioles
(<0.5 mm diameter)
e
n
o
z Alveolar ducts
)
y i
r n (n.b. lined with alveoli)
to ci
a s
r a
i (
p Alveolar sacs
s
e
R

Alveoli