Use the table provided to show that the air travels a total distance of 273 mm from the trachea to the alve
Use the table provided to show that the air travels a total distance of 273 mm from the trachea to the alve
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
Use the table provided to show that the air travels a total distance of 273 mm from the
trachea to the alve
Transcribed Image Text:Table Approximate quantification of the bronchial system.
generation branch branch
diameter length
(mm)
pulmonary branch
total
volume
(cm") speed
(cm/s)
air
cross-
(mm)
sectional
arca (cm?)
trachea
18.0
120.0
2.5
31
393
main bronchus
1.
12.2
47.6
2.3
11
427
lobar bronchus
4.0 462
1.5 507
8.3
19.0
2.1
3
5.6
7.6
2.0
segmental bronchus
4
4.5
12.7
2.5
3.5 392
3.5
10.7
3.1
3.3 325
bronchi
6.
2.8
9.0
4.0
3.5 254
w/cartilage in wall
2.3
7.6
5.1
3.8 188
8.
1.86
6.4
7.0
4.4 144
1.54
5.4
9.6
5.2 105
10
1.30
4.6
13
6.2
73.6
terminal bronchus
11
1.09
3.9
20
7.6
52.3
12
0.95
3.3
29
9.8
34.4
bronchioles
13
0.82
2.7
44
12
23.1
w/muscle in wall
14
0.74
2.3
69
113
16
14.1
15
0.66
2.0
22
8.92
terminal bronchiole
1.65
1.41
16
0.60
180
30
5.40
respiratory bronchiole
respiratory bronchiole
respiratory bronchiole
alveolar duct
alveolar duct
300
534
17
0.54
42
3.33
18
0.50
1.17
61
1.94
19
0.47
0.45
0.99
944
93
1.10
20
0.83
1,600
139
0.60
21
0.43
0.70
3,200
224
0.32
alveolar duct
alveolar sac
22
0.41
0.59
5,900
350
0.18
23
0.41
0.50
12,000
591
0.09
alveoli, 21 per duct
0.28
0.23
3,200
The air speed is assumed to be 1L/s. The data include that for both lungs. The
number in each generation is 2 (for generations z = 0-23), and 300 x 10° for the
%3D
alveoli.
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