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Lungs, Respiratory Functions and Lung Volumes

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gemmalesley's version from 2017-08-14 12:44

Section 1

Question Answer
Volume4l (female), 5l (male)
Right LungLarger, shorter, 2 lobes
Left LungSmaller, 2 lobes
Enclosed in2 layer membrane
Cavity between lungs containsSerous fluid
Alveoli25mil at birth, 300mil at 8 years old
Alveoli containsPhagotic cells, type I and type II cells
memorize

Section 2

Question Answer
Boyle's LawDecrease volume, increase pressure
Pulmonic and atmospheric pressuresAre equal
Breathing causesNegative pressure
Expansion of thorax causesPassive expiration
Passive expirationElastic recoil of lung tissue, torque reaction to rotation of rib cage, increase of abdominal pressure as diaphragm descends, gravity pulls on rising ribs
memorize

Section 3

Question Answer
Lung volume Resting = 40% full
Inspiratory capacity (IC)TV + IRV
Functional residual capacity (FRC)ERV + RV
Vital capacity (VC)IRV + TV + ERV
Total lung capacity (TLC)IRV + TV + ERV + RV
memorize