Use the table provided to show that the air travels a total distance of 273 mm from the trachea to the alveoli
Use the table provided to show that the air travels a total distance of 273 mm from the trachea to the alveoli
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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Use the table provided to show that the air travels a total distance of 273 mm from the trachea to the alveoli
Transcribed Image Text:Table Approximate quantification of the bronchial system.
generation branch branch
diameter length
(mm)
pulmonary branch
volume
(cm") speed
(cm/s)
total
air
cross-
(mm)
sectional
area (cm2)
trachea
18.0
120.0
2.5
31
393
main bronchus
12.2
47.6
2.3
11
427
lobar bronchus
8.3
19.0
2.1
4.0 462
5.6
7.6
2.0
1.5 507
segmental bronchus
4.5
12.7
2.5
3.5 392
3.5
10.7
3.1
3.3 325
bronchi
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
13
20
29
10
1.30
4.6
6.2
73.6
52.3
9.8 34.4
terminal bronchus
11
1.09
3.9
7.6
12
0.95
3.3
2.7
2.3
bronchioles
13
0.82
44
12
23.1
w/muscle in wall
14
0.74
69
16
14.1
15
0.66
2.0
113
22
8.92
terminal bronchiole
16
0.60
1.65
180
30
5.40
respiratory bronchiole
respiratory bronchiole
respiratory bronchiole
alveolar duct
17
0.54
1.41
300
42
3.33
18
0.50
1.17
534
61
1.94
19
0.47
0.99
944
93
1.10
20
0.45
0.83
1,600
139
0.60
alveolar duct
21
0.43
0.70
3,200
224
0.32
alveolar duct
0.59
5,900
12,000
22
0.41
350
0.18
alveolar sac
23
0.41
0.50
591
0.09
alveoli, 21 per duct
0.28
0.23
3,200
The air speed is assumed to be 1 L/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.
4129 567
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