NU 110
Galen College of Nursing NU110 Exam #2
(v2 with Final Review Questions) 2026
4 phases of respiration
1. Pulmonary ventilation
2. External gas exchange
3. Gas transport in the blood
4. Internal gas exchange
Respiration
Inhalation and exhalation of air. The process by which O2 is obtained from
the environment and delivered to the cells.
Structures of the Respiratory System
Nasal cavity,Pharynx, Larynx, Trachea, Bronchi, Alveoli
pulmonary ventilation
movement of air into and out of the lungs/exchange of air between the
atmosphere and the air sacs (Alveoli)
External gas exchange
occurs in the lungs as oxygen diffuses from the air sacs into the blood and
carbon dioxide diffuses out of the blood to be eliminated
Gas transport in the blood
NU 110
, NU 110
The circulating blood carries gases between the lungs and the tissues,
supplying oxygen to the cells and bringing back carbon dioxide.
Internal gas exchange
occurs in the tissues as oxygen diffuses from the blood to the cells, whereas
carbon dioxide travels from the cells into the blood
compliance
The ease with which one can expand the lungs and thorax
Diffusion
Movement of molecules from an area of higher concentration to an area of
lower concentration/concentration gradient
two phases of ventilation
inhalation and exhalation
Surfactant
chemical produced in the lungs to maintain the surface tension of the alveoli
and keep them from collapsing
Difference between the left and right bronchi
right bronchi is larger and extends more vertically. (this is where a foreign
object will most likely lodge)
hypoventilation
causes increased CO2/H+ in blood & acidosis
NU 110
Galen College of Nursing NU110 Exam #2
(v2 with Final Review Questions) 2026
4 phases of respiration
1. Pulmonary ventilation
2. External gas exchange
3. Gas transport in the blood
4. Internal gas exchange
Respiration
Inhalation and exhalation of air. The process by which O2 is obtained from
the environment and delivered to the cells.
Structures of the Respiratory System
Nasal cavity,Pharynx, Larynx, Trachea, Bronchi, Alveoli
pulmonary ventilation
movement of air into and out of the lungs/exchange of air between the
atmosphere and the air sacs (Alveoli)
External gas exchange
occurs in the lungs as oxygen diffuses from the air sacs into the blood and
carbon dioxide diffuses out of the blood to be eliminated
Gas transport in the blood
NU 110
, NU 110
The circulating blood carries gases between the lungs and the tissues,
supplying oxygen to the cells and bringing back carbon dioxide.
Internal gas exchange
occurs in the tissues as oxygen diffuses from the blood to the cells, whereas
carbon dioxide travels from the cells into the blood
compliance
The ease with which one can expand the lungs and thorax
Diffusion
Movement of molecules from an area of higher concentration to an area of
lower concentration/concentration gradient
two phases of ventilation
inhalation and exhalation
Surfactant
chemical produced in the lungs to maintain the surface tension of the alveoli
and keep them from collapsing
Difference between the left and right bronchi
right bronchi is larger and extends more vertically. (this is where a foreign
object will most likely lodge)
hypoventilation
causes increased CO2/H+ in blood & acidosis
NU 110
