1|Page
Phgy 216 Final Verified Exam Newest Exam
Preparation Newest With Complete Questions And
Correct Detailed Answers|| Newest Exam!!
What happens during transport of O2 and CO2? - Answer-
the transport of oxygen in the blood to the tissues and the
movement of carbon dioxide in the opposite direction
What happens during exchange of O2 and CO2 between
blood and tissues? - Answer-the exchange of oxygen from
the blood to the tissues and carbon dioxide from the
tissues into the blood via diffusion
In addition to external respiration, what are the other
functions of the respiratory system? - Answer-- enables
speech by air passing over the vocal cords
- defends against inhaled foreign matter
- the respiratory muscles play a role in parturition and
defecation
- the lung acts as a blood reservoir to allow for rapid
equalization of left and right cardiac outputs
- helps to maintain the acid-base balance
,2|Page
What are the 3 anatomical parts of the respiratory system?
- Answer-the lungs, the chest wall and the pleural space
What is the function of the airways? - Answer-to carry air
between the atmosphere and the alveoli where oxygen
and carbon dioxide are exchanged
What does the upper airway include? - Answer-- the nose,
nasal cavities, pharynx which is the common tube for
respiration and the digestive system
- from the pharynx, air travels to the larynx which is the
location of the vocal chords
What does the lower airway include? - Answer-- begins
with the trachea, which divides into the left and right
bronchi, each of which supplies a lung
- the bronchi branch into progressively narrower airways
known as the bronchioles
- the smallest bronchioles are known as the respiratory
bronchioles as their walls are so thin that some gas
exchange can occur
,3|Page
- at the end of the terminal bronchioles are alveoli, the air
sacs where the majority of gases are exchanged between
air and blood
What is the branching airways of the lower tract described
as? - Answer-the respiratory tree or the tracheobronchial
tree
As the branches get smaller, the overall cross sectional
area increases, why is this important? - Answer-this is
important as it allows for the transition from convective
flow, which requires energy in the form of muscle
contraction to maintain air flow to diffusive flow, which
occurs passively to allow air to flow into the alveoli
What is the process of internal respiration? - Answer--
oxygen is necessary for the production of cellular energy
which takes the form of ATP
- the production of ATP creates carbon dioxide that must
be expelled from the cells
What does external respiration involve? - Answer-all of the
processes that bring oxygen from the atmosphere into the
body, the transport of oxygen to the tissues and the
, 4|Page
removal of carbon dioxide from the tissues and its release
back into the atmosphere
What are the 4 steps of external respiration? - Answer-
Ventilation, exchange of CO2 & O2 between air and blood,
transport of O2 & CO2, exchange CO2 & O2 between
blood and tissue cells
What happens during ventilation? - Answer-- air is moved
in and out of the lungs
- this is called breathing or ventilation and moves air
between the atmosphere and the alveoli in the lungs
What happens during exchange of O2 and CO2 between
air and blood? - Answer-the diffusion of oxygen from the
alveoli to the pulmonary capillaries and the movement of
carbon dioxide in the opposite direction
When does the diffusive zone begin? - Answer-at the level
of the respiratory bronchioles
Phgy 216 Final Verified Exam Newest Exam
Preparation Newest With Complete Questions And
Correct Detailed Answers|| Newest Exam!!
What happens during transport of O2 and CO2? - Answer-
the transport of oxygen in the blood to the tissues and the
movement of carbon dioxide in the opposite direction
What happens during exchange of O2 and CO2 between
blood and tissues? - Answer-the exchange of oxygen from
the blood to the tissues and carbon dioxide from the
tissues into the blood via diffusion
In addition to external respiration, what are the other
functions of the respiratory system? - Answer-- enables
speech by air passing over the vocal cords
- defends against inhaled foreign matter
- the respiratory muscles play a role in parturition and
defecation
- the lung acts as a blood reservoir to allow for rapid
equalization of left and right cardiac outputs
- helps to maintain the acid-base balance
,2|Page
What are the 3 anatomical parts of the respiratory system?
- Answer-the lungs, the chest wall and the pleural space
What is the function of the airways? - Answer-to carry air
between the atmosphere and the alveoli where oxygen
and carbon dioxide are exchanged
What does the upper airway include? - Answer-- the nose,
nasal cavities, pharynx which is the common tube for
respiration and the digestive system
- from the pharynx, air travels to the larynx which is the
location of the vocal chords
What does the lower airway include? - Answer-- begins
with the trachea, which divides into the left and right
bronchi, each of which supplies a lung
- the bronchi branch into progressively narrower airways
known as the bronchioles
- the smallest bronchioles are known as the respiratory
bronchioles as their walls are so thin that some gas
exchange can occur
,3|Page
- at the end of the terminal bronchioles are alveoli, the air
sacs where the majority of gases are exchanged between
air and blood
What is the branching airways of the lower tract described
as? - Answer-the respiratory tree or the tracheobronchial
tree
As the branches get smaller, the overall cross sectional
area increases, why is this important? - Answer-this is
important as it allows for the transition from convective
flow, which requires energy in the form of muscle
contraction to maintain air flow to diffusive flow, which
occurs passively to allow air to flow into the alveoli
What is the process of internal respiration? - Answer--
oxygen is necessary for the production of cellular energy
which takes the form of ATP
- the production of ATP creates carbon dioxide that must
be expelled from the cells
What does external respiration involve? - Answer-all of the
processes that bring oxygen from the atmosphere into the
body, the transport of oxygen to the tissues and the
, 4|Page
removal of carbon dioxide from the tissues and its release
back into the atmosphere
What are the 4 steps of external respiration? - Answer-
Ventilation, exchange of CO2 & O2 between air and blood,
transport of O2 & CO2, exchange CO2 & O2 between
blood and tissue cells
What happens during ventilation? - Answer-- air is moved
in and out of the lungs
- this is called breathing or ventilation and moves air
between the atmosphere and the alveoli in the lungs
What happens during exchange of O2 and CO2 between
air and blood? - Answer-the diffusion of oxygen from the
alveoli to the pulmonary capillaries and the movement of
carbon dioxide in the opposite direction
When does the diffusive zone begin? - Answer-at the level
of the respiratory bronchioles
