VPHY 3100 Exam 4 Respiration
questions and answers already passed
get rid of wastes/make ATP - correct answer ✔✔purpose of respiratory process
ventilation - correct answer ✔✔breathing; to move air into and out of respiratory
system
external respiration - correct answer ✔✔gas exchange between air and capillaries
in the lungs
internal respiration - correct answer ✔✔gas exchange between systemic
capillaries and tissues of the body
pressure gradients - correct answer ✔✔generate diffusion
cellular respiration - correct answer ✔✔make ATP
conducting zone and respiratory zone - correct answer ✔✔two zones of
respiratory system (airway passages)
conducting zone - correct answer ✔✔outside the lung - nasal passages -> pharynx
-> epiglottis -> larynx (glottis)
,inside the lung - trachea (1) -> bronchus (2 branches) -> bronchiole -> terminl
bronchiole
respiratory system - correct answer ✔✔respiratory bronchiole -> alveolar sacs
becomes smaller - correct answer ✔✔what happens to individual airway diameter
and length as you go deeper into the lungs?
become larger - correct answer ✔✔what happens to the collective x-sectional
area as you go deeper into the lungs?
functions of the conducting zone - correct answer ✔✔passage of air, warming,
humidification, filtration, and immune surveillance
mucociliary apparatus - correct answer ✔✔system of mucus covered cilia in the
respiratory tract that helps clear foreign material up and out
source of water vapor - correct answer ✔✔coming across from cells and into the
airways
functions of the respiratory zone - correct answer ✔✔passage of air, gas
exchange*, immune surveillance
gas exchange in lungs - correct answer ✔✔oxygenated blood is transported by
branches of the pulmonary vein to the heart, deoxygenated blood is transported
by branches of the pulmonary artery to the lungs and alveoli
, alveolia - correct answer ✔✔the sites of gas exchange
total # ~300,000,000
0.25-0.5 mm in diameter (narrow)
total area = 60-80 m2 (lot of area to exchange gas)
Type I alveolar cells - correct answer ✔✔the major lining cells, accounts for 95-
97% of total surface area
Type II alveolar cells - correct answer ✔✔production of surfactants, more of this
type, not a lot of surface area, air blood barrier= 0.3 m
capillary net - correct answer ✔✔covers alveolar sacs
layers of respiratory membrane - correct answer ✔✔1. fluid layer with surfactant
(coats inside of alveoli)
2. Type I alveolar cell membranes
3. Narrow interstitial space (1 & 2 basically fused)
4. capillary endothelial cell membranes
thoracic cavity - correct answer ✔✔surrounded by rib cage (chest wall) and the
respiratory muscles (diaphragm)
pleural (intra-pleural) space - correct answer ✔✔thin fluid layer between visceral
pleura covering lungs (visceral) and parietal pleural lining thoracic cavity walls
questions and answers already passed
get rid of wastes/make ATP - correct answer ✔✔purpose of respiratory process
ventilation - correct answer ✔✔breathing; to move air into and out of respiratory
system
external respiration - correct answer ✔✔gas exchange between air and capillaries
in the lungs
internal respiration - correct answer ✔✔gas exchange between systemic
capillaries and tissues of the body
pressure gradients - correct answer ✔✔generate diffusion
cellular respiration - correct answer ✔✔make ATP
conducting zone and respiratory zone - correct answer ✔✔two zones of
respiratory system (airway passages)
conducting zone - correct answer ✔✔outside the lung - nasal passages -> pharynx
-> epiglottis -> larynx (glottis)
,inside the lung - trachea (1) -> bronchus (2 branches) -> bronchiole -> terminl
bronchiole
respiratory system - correct answer ✔✔respiratory bronchiole -> alveolar sacs
becomes smaller - correct answer ✔✔what happens to individual airway diameter
and length as you go deeper into the lungs?
become larger - correct answer ✔✔what happens to the collective x-sectional
area as you go deeper into the lungs?
functions of the conducting zone - correct answer ✔✔passage of air, warming,
humidification, filtration, and immune surveillance
mucociliary apparatus - correct answer ✔✔system of mucus covered cilia in the
respiratory tract that helps clear foreign material up and out
source of water vapor - correct answer ✔✔coming across from cells and into the
airways
functions of the respiratory zone - correct answer ✔✔passage of air, gas
exchange*, immune surveillance
gas exchange in lungs - correct answer ✔✔oxygenated blood is transported by
branches of the pulmonary vein to the heart, deoxygenated blood is transported
by branches of the pulmonary artery to the lungs and alveoli
, alveolia - correct answer ✔✔the sites of gas exchange
total # ~300,000,000
0.25-0.5 mm in diameter (narrow)
total area = 60-80 m2 (lot of area to exchange gas)
Type I alveolar cells - correct answer ✔✔the major lining cells, accounts for 95-
97% of total surface area
Type II alveolar cells - correct answer ✔✔production of surfactants, more of this
type, not a lot of surface area, air blood barrier= 0.3 m
capillary net - correct answer ✔✔covers alveolar sacs
layers of respiratory membrane - correct answer ✔✔1. fluid layer with surfactant
(coats inside of alveoli)
2. Type I alveolar cell membranes
3. Narrow interstitial space (1 & 2 basically fused)
4. capillary endothelial cell membranes
thoracic cavity - correct answer ✔✔surrounded by rib cage (chest wall) and the
respiratory muscles (diaphragm)
pleural (intra-pleural) space - correct answer ✔✔thin fluid layer between visceral
pleura covering lungs (visceral) and parietal pleural lining thoracic cavity walls
