Respiratory System Anatomy & Lung Volumes (11) Flashcards
Base and apex of lungs
Base sits on diaphragm, apex at the top
Where is hilium
on medial surface where bronchi and blood vessels
enter the lung (root of the lung)
How many lobes on each side?
Right lung: 3, left lung: 2
Tidal volume
amount of air inspired or expired with each
breath. At rest: 500 mL
Inspiratory reserve volume
amount that can be inspired forcefully after inspiration of the tidal volume (3100 mL at rest)
Expiratory reserve volume
amount that can be forcefully expired after expiration of the tidal volume (1200 mL at rest)
Residual volume
volume still remaining in respiratory passages and lungs after most forceful expiration (1200 mL)
Inspiratory capacity
tidal volume plus inspiratory reserve volume (3600 ml)
Functional residual capacity
expiratory reserve volume plus residual volume (2400 ml)
Vital capacity
sum of inspiratory reserve volume, tidal volume, and
expiratory reserve volume (4800 ml)
Total lung capacity
sum of inspiratory and expiratory reserve volumes plus tidal volume and residual volume (6000 ml)
Minute ventilation
total air moved into and out of respiratory system
each minute; tidal volume X respiratory rate
Respiratory rate/frequency
number of breaths per minute
Anatomic dead space
formed by nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and terminal bronchioles
Alveolar ventilation (VA)
volume of air available for gas exchange/minute
