Galen College of Nursing
NU110 Exam #2 (v2 with final
review questions)
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
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
Hyperventilation
causes decreased CO2/H+ in blood and Alkalosis
Part of the brain controls the HR and Resp
Medulla/Brainstem
What is the process that controls respiration
NU110 Exam #2 (v2 with final
review questions)
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
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
Hyperventilation
causes decreased CO2/H+ in blood and Alkalosis
Part of the brain controls the HR and Resp
Medulla/Brainstem
What is the process that controls respiration
