Respiratory Flashcards
3 factors that affect pulmonary ventilation
surface tension
lung compliance
airway diameter
define pulmonary respiration
exchange of gases in the lungs
what muscles are used with normal (quiet) breathing for inhalation and exhalation
diaphragm
external intercostals
what muscles are used with forced inspiration
SCM
scalenes
pec minor
what muscles are used with forced expiration during exhalation
abdominals
intercostals
what part of the brain controls respiration
medulla
pontine
list the 3 main cells within a pulmonary lobule
type I alveolar
type II alveolar
macrophages (dust cell)
what does type I alveolar do
gas exchange respiratory membrane
what does type II alveolar do
secrete surfactant
what does the epiglottis do
separates trachea from esophagus
what is pitch
tension in vocal cords
no tension = no sound
when taut = higher pitch
terminal bronchioles lead into the respiratory bronchioles
true
what is pulmonary ventilation
proces of inhalation and exhalation
what is pulmonary respiration
gas exchange in lungs
happening in type I alveolar cells
internal respiration
O2 in bloodstream throughout body
external respiration
happens in alveoli
when pressure goes up, volume goes down
when pressure goes down volume goes up
when diaphragm relaxes - increased pressure in lungs – decreased volume — increased air flows out
boyle’s law states
volume and pressure are inversely proportional
if volume increases, the pressure decreases
rule #1 states
gases move from high to low pressure
daltons law states
mixtures of gases **
behave Independently
exchange of O2 and CO2 between alveoli and outside air is governed by PASSIVE DIFFUSION regulated by which laws
Dalton’s
henrys
what is eupnea
normal, quiet breathing
which layers contain C rings
hyaline cartilage