age 1 of 93
NR 283 Pathophysiology Week 1&2 eDapt EXAM
Which best describes the way oxygen and carbon dioxide move
between the alveoli and capillaries? .......Answer.........Gases
move from a high pressure and concentration to a low pressure
and concentration.
gas exchange .......Answer.........the transportation of oxygen
(O2) into the blood and cells and carbon dioxide (CO2) from
the blood and cells. For gas exchange to occur at the cellular
level, ventilation, or the movement of O2 into and CO2 out of
the lungs, must occur.
-happens in the kidneys and cells through cellular respiration
-gases need transport to site of exchange
,age 2 of 93
what transports CO2 from the cells to the alveoli to be exhaled
and O2 from the alveoli to the cells? .......Answer.........hemoglobin
steps of gas exchange .......Answer.........1. breathe in oxygen/out
carbon dioxide
2. oxygen rich blood is transported to the cells
3. gases are exchanged (O2 enters cells, CO2 leaves cells)
4. Carbon dioxide rich blood goes to the lungs
in what part of the lungs does gas exchange occur?
.......Answer.........alveoli
causes of impaired gas exchange .......Answer.........not enough
oxygen in the environment (suffocation)
,age 3 of 93
too much carbon dioxide in the environment (carbon dioxide
poisoning)
partial or full blockage between the mouth and the alveoli
(choking)
blockage of gas exchange by another substance or chemical
(drowning, infection)
not enough hemoglobin to carry oxygen (anemia)
blood clots in the capillaries or veins (pulmonary emboli)
difficulty exhaling because of trapped air (asthma or chronic
obstructive pulmonary disease)
muscles used to breathe are too weak (spinal cord injury,
myasthenia gravis)
, age 4 of 93
ventilation issue .......Answer.........not enough oxygen is being
collected
due to:
limited or no oxygen in the environment (limited oxygen in
surrounding environment)
not enough pressure to pull the oxygen into the lungs (muscle
weakness)
something is blocking the airway (foreign object or tongue)
perfusion issue .......Answer.........something is preventing oxygen
from getting into the tissues
NR 283 Pathophysiology Week 1&2 eDapt EXAM
Which best describes the way oxygen and carbon dioxide move
between the alveoli and capillaries? .......Answer.........Gases
move from a high pressure and concentration to a low pressure
and concentration.
gas exchange .......Answer.........the transportation of oxygen
(O2) into the blood and cells and carbon dioxide (CO2) from
the blood and cells. For gas exchange to occur at the cellular
level, ventilation, or the movement of O2 into and CO2 out of
the lungs, must occur.
-happens in the kidneys and cells through cellular respiration
-gases need transport to site of exchange
,age 2 of 93
what transports CO2 from the cells to the alveoli to be exhaled
and O2 from the alveoli to the cells? .......Answer.........hemoglobin
steps of gas exchange .......Answer.........1. breathe in oxygen/out
carbon dioxide
2. oxygen rich blood is transported to the cells
3. gases are exchanged (O2 enters cells, CO2 leaves cells)
4. Carbon dioxide rich blood goes to the lungs
in what part of the lungs does gas exchange occur?
.......Answer.........alveoli
causes of impaired gas exchange .......Answer.........not enough
oxygen in the environment (suffocation)
,age 3 of 93
too much carbon dioxide in the environment (carbon dioxide
poisoning)
partial or full blockage between the mouth and the alveoli
(choking)
blockage of gas exchange by another substance or chemical
(drowning, infection)
not enough hemoglobin to carry oxygen (anemia)
blood clots in the capillaries or veins (pulmonary emboli)
difficulty exhaling because of trapped air (asthma or chronic
obstructive pulmonary disease)
muscles used to breathe are too weak (spinal cord injury,
myasthenia gravis)
, age 4 of 93
ventilation issue .......Answer.........not enough oxygen is being
collected
due to:
limited or no oxygen in the environment (limited oxygen in
surrounding environment)
not enough pressure to pull the oxygen into the lungs (muscle
weakness)
something is blocking the airway (foreign object or tongue)
perfusion issue .......Answer.........something is preventing oxygen
from getting into the tissues
