Lecture 22 Pulmonary Ventilation Flashcards
inspiratory muscles (5)
respiratory diaphragm external intercostal muscles sternomastoids scalene muscles serratus anterior muscles
forced expiration muscles (2)
abdominal muscles
internal intercostal muscles
vital capacity
4600 mL
sum of volume inhaled and exhaled (maximum inspiration and expiration)
total lung capacity
5800 mL
sum all volumes = vital capacity + residual volume
inspiratory capacity
3500 mL, sum of volume above resting capacity = tidal volume + inspiratory reserve volume
functional residual capacity
2300 mL
sum of volume below resting capacity = expiratory reserve volume + residual volume
tidal volume
500 mL
volume of air inspired or expired with each breath at rest
inspiratory reserve volume
3000 mL
volume of air inspired in addition to the tidal volume with forceful inspiration
expiratory reserve volume
1100 mL
additional volume of air expired at end of tidal with forceful expiration
residual volume
1200 mL
volume of air in lungs after forceful expiration
minute ventilation
= total volume of gas moved in and out of lungs per minute
= breaths per minute x tidal volume
=0.5 x breathing rate
alveolar ventilation
total volume of gases enduring spaces participating in gas exchange per minute
= breaths per minute x (Tidal V - Dead Space)
= 0.35 x Breathing rate
pleural pressure
pressure of fluid between parietal pleura and visercal pleura
alveolar pressure
pressure of air inside alveolar
transpulmonary pressure
difference between pleural and alveolar pressure
