PNB 2265 RESPIRATORY QUIZZES WITH
ACCURATE ANSWERS | GRADED A+ .
functions of the respiratory system - Correct Answer -gas exchange, regulate blood [H+],
speech, defense against microbes
upper respiratory tract - Correct Answer -nose, sinuses, pharynx
lower respiratory tract - Correct Answer -starts with larynx, trachea, bronchial tree, thoracic
cavity, continues through alveoli.
conducting zone - Correct Answer -purpose is to filter, warm, and moisten air, and conduct it
to lungs. conducting zone starts with nose/pharynx and extends to terminal bronchioles. nose,
nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles->terminal broncioles
respiratory zone - Correct Answer -purpose is gas exchange and includes the respiratory
bronchioles, alveolar duct, alveolus, and respiratory membrane. respiratory bronchioles,
alveolar ducts, alveoli
ciliated columnar epithelium - Correct Answer -remove inhaled debris. also are mucus-
secreting goblet cells in this epithelium
bronchial tree - Correct Answer -transition from conducting to respiratory zone
pleural membranes - Correct Answer -double serous membrane that encases the lung
Boyle's Law - Correct Answer -with a closer container and a fixed # of gas molecules:
inverse relationship b/w pressure and volume
bulk flow - Correct Answer -F= ΔP/R, where ΔP= pressure difference and R= resistance
ventilation - Correct Answer -F= Palv - Patm/R
1
, the amount of gas reaching specific alveoli
Dalton's Law of Partial Pressures - Correct Answer -the pressure each gas exerts is
independent of the pressure the others exert. Total pressure of the mixture is the sum of the
individual gas pressures.
Henry's Law - Correct Answer -a gas dissolves into and out of liquid in proportion to its
partial pressure
emphysema affects - Correct Answer --thickness of respiratory membrane -> increased
-surface area for exchange -> decreased
cooperative binding - Correct Answer -affinity of Hb for O2 varies with oxygen saturation
how do we regulate breathing? - Correct Answer --increase ventilation by increasing rate and
depth of breathing
-regulated by chemical factors in the blood (CO2, pH, O2)
peripheral chemoreceptors - Correct Answer --carotid and aortic bodies
-sensitive to PO2; PCO2 and pH
central chemoreceptors - Correct Answer --sensitive to pH of CSF
-recall, when blood CO2 rises, pH decreases
CO2 transport - Correct Answer --dissolved in plasma
-bound to Hb
-as bicarbonate ions
brainstem respiratory control centers responsible for - Correct Answer --respiratory rhythm
generation
-activation of inspiratory and expiratory nerves and muscles
-alveolar ventilation via changes in arterial blood gas partial pressures
2
ACCURATE ANSWERS | GRADED A+ .
functions of the respiratory system - Correct Answer -gas exchange, regulate blood [H+],
speech, defense against microbes
upper respiratory tract - Correct Answer -nose, sinuses, pharynx
lower respiratory tract - Correct Answer -starts with larynx, trachea, bronchial tree, thoracic
cavity, continues through alveoli.
conducting zone - Correct Answer -purpose is to filter, warm, and moisten air, and conduct it
to lungs. conducting zone starts with nose/pharynx and extends to terminal bronchioles. nose,
nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles->terminal broncioles
respiratory zone - Correct Answer -purpose is gas exchange and includes the respiratory
bronchioles, alveolar duct, alveolus, and respiratory membrane. respiratory bronchioles,
alveolar ducts, alveoli
ciliated columnar epithelium - Correct Answer -remove inhaled debris. also are mucus-
secreting goblet cells in this epithelium
bronchial tree - Correct Answer -transition from conducting to respiratory zone
pleural membranes - Correct Answer -double serous membrane that encases the lung
Boyle's Law - Correct Answer -with a closer container and a fixed # of gas molecules:
inverse relationship b/w pressure and volume
bulk flow - Correct Answer -F= ΔP/R, where ΔP= pressure difference and R= resistance
ventilation - Correct Answer -F= Palv - Patm/R
1
, the amount of gas reaching specific alveoli
Dalton's Law of Partial Pressures - Correct Answer -the pressure each gas exerts is
independent of the pressure the others exert. Total pressure of the mixture is the sum of the
individual gas pressures.
Henry's Law - Correct Answer -a gas dissolves into and out of liquid in proportion to its
partial pressure
emphysema affects - Correct Answer --thickness of respiratory membrane -> increased
-surface area for exchange -> decreased
cooperative binding - Correct Answer -affinity of Hb for O2 varies with oxygen saturation
how do we regulate breathing? - Correct Answer --increase ventilation by increasing rate and
depth of breathing
-regulated by chemical factors in the blood (CO2, pH, O2)
peripheral chemoreceptors - Correct Answer --carotid and aortic bodies
-sensitive to PO2; PCO2 and pH
central chemoreceptors - Correct Answer --sensitive to pH of CSF
-recall, when blood CO2 rises, pH decreases
CO2 transport - Correct Answer --dissolved in plasma
-bound to Hb
-as bicarbonate ions
brainstem respiratory control centers responsible for - Correct Answer --respiratory rhythm
generation
-activation of inspiratory and expiratory nerves and muscles
-alveolar ventilation via changes in arterial blood gas partial pressures
2
