Cells lining the alveoli secrete a soapy substance known as
-mucous
-surfactant
-emulsifier
-cytosol
surfactant
Which is not a structure of the left lung
-superior lobe
-oblique fissure
-inferior lobe
- horizontal fissure
horizontal fissure
during resting inhalation:
-volume increases and pressure decreases
-volume and pressure increase
-volume and pressure decrease
-volume decreases and pressure increases
#NAME?
which is not an accessory muscle of inhalation
-external intercostals
-pectoralis minor
-sternocleidomastoid
-pectoralis major
pectoralis major
at the base of the trachea is a structure known as
-secondary bronchi
-thyroid cartilage
-carina
-arytenoid cartilage
carina
the typical volume of air moved in and out of lungs in one minute in
an adult
-10 liters
-7.5 liters
-5.5 liters
-4 liters
7.5 liters
inspiratory capacity is represented by
-inspiratory reserve volume and tidal volume
-vital capacity and tidal volume
-residual volume and tidal volume
-vital capacity and inspiratory reserve volume
#NAME?
Oxygen produces how much of the total pressure of air
-50.2%
-30.4%
-20.9%
-12.7%
-20.90%
the PCO2 of tissues is about
-104 mm Hg
-45 mm Hg
-40 mm Hg
-95 mm Hg
45 mm Hg
oxygen moves out the alveoli and into the blood by way of
-osmosis
-diffusion
-active transport
-filtration
diffusion
which of the following is not a transport mechanism for CO2
-carbaminohemoglobin
-dissolved in plasma
-bonds with plasma proteins
-bicarbonate ion
bonds with plasma proteins
carbon dioxide combines with water and carbonic anhydrase to form
-carbonic acid
-hemoglobin
-hydrogen ions
-tricarbonate
carbonic acid
holding your breath would cause a state of
-respiratory alkalosis because of the buildup of hydrogen ions
-respiratory alkalosis because of the elimination of hydrogen ions
-respiratory acidosis because of the elimination of hydrogen ions
-respiratory acidosis because of the buildup of hydrogen ions
#NAME?
the oxygen-hemoglobin saturation curve represents
-hemoglobin's affinity for oxygen binding in various partial
pressures of oxygen
-hemoglobin affinity for oxygen binding over various times
-partial pressures of oxygen during various times
-hemoglobin's release of oxygen and co2 over time
hemoglobin's affinity for oxygen binding in various partial pressure
of oxygen
the change in affinity for carbon dioxide binding in hemoglobin is
know as
-carbon dioxide release effect
-bohr effect
-pco2 difference effect
-haldane effect
haldane effect
which respiratory center causes slow, deep breathing when stimulated
-ventral respiratory group
-dorsal respiratory group
-apneustic center
-pneumotaxic center
apneustic center