Nurs 5315 Pulmonary – Questions & A+ Answers
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Terms in this set (83)
Which of the following B) The exchange of gases between the environment
best describes and the cells of the body
respiration?
A) The mechanical Rationale: Respiration is a biochemical process that
process of moving air in involves gas exchange at the cellular level, including
and out of the lungs both external and internal respiration.
B) The exchange of gases
between the environment
and the cells of the body
C) The contraction and
relaxation of the
diaphragm
D) The movement of
oxygen into the lungs
through the trachea
What is the primary driver B) Contraction and relaxation of the diaphragm and
of ventilation? intercostal muscles
A) Diffusion of gases
across the alveoli Rationale: Ventilation refers to the mechanical
B) Contraction and process of air movement, which is primarily
relaxation of the controlled by muscle contraction and relaxation.
diaphragm and
intercostal muscles
C) Hemoglobin
saturation levels
D) Carbonic anhydrase
activity in red blood cells
,Which of the following is A) The diffusion of oxygen from the alveoli into the
an example of external bloodstream
respiration?
A) The diffusion of Rationale: External respiration is the exchange of
oxygen from the alveoli gases between the lungs and the environment,
into the bloodstream primarily occurring at the alveolar-capillary
B) The uptake of oxygen membrane.
by mitochondria for ATP
production
C) The conversion of
carbon dioxide into
bicarbonate in red blood
cells
D) The transportation of
oxygen via hemoglobin
Where does gas C) Alveoli
exchange primarily occur
in the lungs? Rationale: The alveoli are the primary site for gas
A) Trachea exchange due to their thin walls and extensive
B) Bronchioles capillary network.
C) Alveoli
D) Pharynx
Which law explains the C) Fick's Law
diffusion of gases across
the alveolar-capillary Rationale: Fick's Law states that gas diffusion
membrane? depends on surface area, membrane thickness, and
A) Boyle's Law partial pressure gradients.
B) Henry's Law
C) Fick's Law
D) Dalton's Law
, What determines the B) The concentration gradient between alveolar air
direction of oxygen and blood
diffusion in the lungs?
A) The volume of air in Rationale: Oxygen moves from high partial pressure
the lungs in the alveoli to the lower partial pressure in the
B) The concentration pulmonary capillaries.
gradient between
alveolar air and blood
C) The presence of
surfactant in the alveoli
D) The amount of
hemoglobin in red blood
cells
How is most oxygen B) Bound to hemoglobin
transported in the
blood? Rationale: About 98.5% of oxygen is bound to
A) Dissolved in plasma hemoglobin in red blood cells.
B) Bound to hemoglobin
C) Converted to
bicarbonate
D) As carbonic acid
What percentage of C) 70%
carbon dioxide is
transported as Rationale: The majority of CO₂ (about 70%) is
bicarbonate? converted into bicarbonate in red blood cells for
A) 10% transport.
B) 23%
C) 70%
D) 98.5%
Save
Terms in this set (83)
Which of the following B) The exchange of gases between the environment
best describes and the cells of the body
respiration?
A) The mechanical Rationale: Respiration is a biochemical process that
process of moving air in involves gas exchange at the cellular level, including
and out of the lungs both external and internal respiration.
B) The exchange of gases
between the environment
and the cells of the body
C) The contraction and
relaxation of the
diaphragm
D) The movement of
oxygen into the lungs
through the trachea
What is the primary driver B) Contraction and relaxation of the diaphragm and
of ventilation? intercostal muscles
A) Diffusion of gases
across the alveoli Rationale: Ventilation refers to the mechanical
B) Contraction and process of air movement, which is primarily
relaxation of the controlled by muscle contraction and relaxation.
diaphragm and
intercostal muscles
C) Hemoglobin
saturation levels
D) Carbonic anhydrase
activity in red blood cells
,Which of the following is A) The diffusion of oxygen from the alveoli into the
an example of external bloodstream
respiration?
A) The diffusion of Rationale: External respiration is the exchange of
oxygen from the alveoli gases between the lungs and the environment,
into the bloodstream primarily occurring at the alveolar-capillary
B) The uptake of oxygen membrane.
by mitochondria for ATP
production
C) The conversion of
carbon dioxide into
bicarbonate in red blood
cells
D) The transportation of
oxygen via hemoglobin
Where does gas C) Alveoli
exchange primarily occur
in the lungs? Rationale: The alveoli are the primary site for gas
A) Trachea exchange due to their thin walls and extensive
B) Bronchioles capillary network.
C) Alveoli
D) Pharynx
Which law explains the C) Fick's Law
diffusion of gases across
the alveolar-capillary Rationale: Fick's Law states that gas diffusion
membrane? depends on surface area, membrane thickness, and
A) Boyle's Law partial pressure gradients.
B) Henry's Law
C) Fick's Law
D) Dalton's Law
, What determines the B) The concentration gradient between alveolar air
direction of oxygen and blood
diffusion in the lungs?
A) The volume of air in Rationale: Oxygen moves from high partial pressure
the lungs in the alveoli to the lower partial pressure in the
B) The concentration pulmonary capillaries.
gradient between
alveolar air and blood
C) The presence of
surfactant in the alveoli
D) The amount of
hemoglobin in red blood
cells
How is most oxygen B) Bound to hemoglobin
transported in the
blood? Rationale: About 98.5% of oxygen is bound to
A) Dissolved in plasma hemoglobin in red blood cells.
B) Bound to hemoglobin
C) Converted to
bicarbonate
D) As carbonic acid
What percentage of C) 70%
carbon dioxide is
transported as Rationale: The majority of CO₂ (about 70%) is
bicarbonate? converted into bicarbonate in red blood cells for
A) 10% transport.
B) 23%
C) 70%
D) 98.5%
