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24 Cards in this Set

  • Front
  • Back
Respiratory center of the brain
Pons and medulla Oblongata
Dorsal respiratory gs
Ventral resp. gs
pneumotaxic ctr
apneustic ctr
Dorsal respiratory group
Inspiratory ctr (Medulla)
normal, quiet breath in
Elastic Recoil
quiet exhale
lungs, muscles return to rest when not excited by Dorsal Resp gs.
Ventral Respiratory Group
Expiratory ctr (medulla oblongata)
Forced breathing
inhibitory imp to Dorsal R.C. for deep breath
Pneumotaxic Center
Controll rate and pattern of breath
Apneustic Center
lower pons
?? work w/ pneumotaxic ctr to controll rate ??
Quiet breath process
insp. ctr active for about 2 sec. -> inhale -> then inactive 3 sec. -> exhale -> repeat
impulse to Diphragm
Phrenic Nerves
impulse to intercostal muscles
intercostal nerves
branch of thoracic spinal nrv
abdominal muscle impulse
from spinal nerves in abdominal region of spinal cord
process of O2 and co2 exchange
Simple diffusion of CO2 into alveoi and O2 from alveoli into bv.
Vise versa in capillaries
Uptake of O2 by Hemoglobin
Low temp and higher pH in lungs causes uptake, Higher temp and lower pH cause release
Oxygen transport in blood
97% by hgb
3% dissolved
Carbon dioxide transport in blood
70% as bicarbonate HCO3-
23% by hgb
7% dissolved
hemeglobin combined w/ O2
CO2 with hemoglobin
Carbon monoxide poisoning
CO much more reactive w/ hgb thean O2
won't let go unless person is treated with O2 @ 600mm Hg (high pressure) for a while
Tidal volume
amount of air in one normal breath
minute respiratory volume
Amount of air moved in one minute
Expiratory reserve volume
Amount amount more that can be pushed out after normal exhale
Vital capacity
Max amount that can be exhaled after taking the fullest breath possible
inspiratory capacity
full amount you can breath in after blowing out all you can
inspiratory reserve volume
Amount that can be brethed in after tidal volume
Residual Volume
volume left in the lungs all the time
what is left after breathing out all you can