chapter 15 Flashcards
respiratory system 2 basic functions
air distribution & gas exchange
upper respiratory tract organs
nose
pharynx
larynx
lower respiratory tract organs
trachea
bronchiole tree
lungs
membrane that separates air in alveoli from blood
respiratory membrane
membrane that lines most of air distribution tubes
respiratory mucosa
paranasal sinuses
frontal
maxilla
sphenoid
ethmoid
drains tears into nasal cavity
lacrimal sac
protrudes into nasal cavities and function to warm and humidity air
conchae turbinates
large air tube in neck
trachea
4 smaller air tubes connect to trachea and alveolar sacs
primary bronchi
secondary bronchi
bronchioles
alveolar ducts
substance made by lungs to reduce surface tension
surfactant
exchange of gases between blood and tissues
internal respiration
exchange of gases between blood and air in lungs
external respiration
most important muscle in respiration
diaphragm
oxygen carried in blood
oxyhemoglobin
carbon dioxide can be carried in blood as
bicarbonate ion
carbon dioxide combined in hemoglobin
carbiminohemoglobin
the inspiratory and expiratory centers are located in _____ brain
medulla
receptors that inhibit the inspiratory center that keeps lungs from over expanding
stretch receptors
receptors that modify respiratory rates by responding to amount of CO2 and O2 and acid levels in blood
chemoreceptors
amount of air moved in and out of lung during normal breathing
tidal volume
3 volumes that make up vital capacity
tidal volume
expiratory reserve
inspiratory reserve
the volume in total lung capacity but not vital capacity
residual volume
normal breathing
eupnea
rapid and deep respirations
hyperventilation
slow and shallow respirations
hypoventilation
labored or difficult respirations
dyspnea
stopped respiration
apnea
failure to resume breathing after a period of apnea
respiratory arrest
cycles of alternating apnea and hyperventilation with critical conditions
cheyne stokes respiration