Respiration Flashcards
Anatomy
External Nares -> pharynx -> larynx -> past epiglottis -> trachea -> mainstem bronchi -> bronchioles -> alveoli
Surfactant
a detergent that lowers surface tension and prevents the alveolus from collapsing on itself
thoracic cavity
contains heart and lungs
diaphragm
necessary for inspiration. Breathing autonomic but composed of skeletal muscle
pleurae
membranes that surround lungs
closed sac against which the lung grows
visceral
surface of pleura adjacent to lung
parietal
surface of pleura not adjacent to lung
intrapleural space
fluid-filled space between pleura surfaces
ph-sensitive m.o. chemoreceptors
receptors in the medulla oblongata that measure blood ph and control respriation rate
Total Lung Capacity (TLC)
Vital Capacity + Residual Volume
Vital Capacity
The amount we can force out after our largest inhale
Tidal Volume + Expiratory Reserve Volume + Inspiratory Reserve Volume
Residual Volume
The amount left over after we force out as much air as we can
There will always be some air to prevent lung collapse
Tidal Volume
Tide of air in lungs with inhale and exhale
Expiratory Reserve Volume
Amount we could breathe out during lulls of tidal volume
Inspiratory Reserve Volume
Amount we could breath in during peaks of tidal volume
