APHY 102 Exam 3 Chapter (19-21) Questions and Answers
2024
The events of respiration are
ventilation, external and internal
Breathing functions to
deliver oxygen to cells, where it takes part in the reactions of cellular respiration that
liberate energy from nutrient molecules and get rid of carbon dioxide, which maintains
the pH of the internal environment.
The mucous membrane lining the nasal cavity
warms incoming air.
moistens incoming air.
entraps dust.
correct all of the above.
The pharynx functions as a ______, whereas the larynx functions as a ______.
common passageway for air and food; passageway for air only
The right lung has ______ lobes; the left lung has ______ lobes.
superior, middle, and inferior; superior and inferior
The force that moves air into the lungs during inspiration comes from the
atmospheric pressure.
Of the respiratory air volumes listed, which one has the largest volume?
Vital capacity
The first event in expiration is
the diaphragm and external intercostal respiratory muscles relax.
The respiratory control areas are in the
pons and medulla oblongata.
Which of the following factors does not directly affect breathing rate?
pH
Which of the following is important in maintaining the pH of blood?
Carbon dioxide
Hyperventilation is usually accompanied by a(n)
decrease in blood CO2 concentration and a rise in pH.
The walls of the alveoli are composed of
simple squamous epithelium.
In emphysema
pressure in alveoli increases and their walls burst, coalescing them and decreasing the
surface area for gas exchange.
T/F: The glottis is the opening between the vocal cords.
TRUE
T/F: The pectoralis minors and the sternocleidomastoid are useful in aiding
forced expiration.
FALSE
T/F: Carbon monoxide bonds to hemoglobin more effectively than does oxygen.
TRUE
The organs of the urinary system are
2024
The events of respiration are
ventilation, external and internal
Breathing functions to
deliver oxygen to cells, where it takes part in the reactions of cellular respiration that
liberate energy from nutrient molecules and get rid of carbon dioxide, which maintains
the pH of the internal environment.
The mucous membrane lining the nasal cavity
warms incoming air.
moistens incoming air.
entraps dust.
correct all of the above.
The pharynx functions as a ______, whereas the larynx functions as a ______.
common passageway for air and food; passageway for air only
The right lung has ______ lobes; the left lung has ______ lobes.
superior, middle, and inferior; superior and inferior
The force that moves air into the lungs during inspiration comes from the
atmospheric pressure.
Of the respiratory air volumes listed, which one has the largest volume?
Vital capacity
The first event in expiration is
the diaphragm and external intercostal respiratory muscles relax.
The respiratory control areas are in the
pons and medulla oblongata.
Which of the following factors does not directly affect breathing rate?
pH
Which of the following is important in maintaining the pH of blood?
Carbon dioxide
Hyperventilation is usually accompanied by a(n)
decrease in blood CO2 concentration and a rise in pH.
The walls of the alveoli are composed of
simple squamous epithelium.
In emphysema
pressure in alveoli increases and their walls burst, coalescing them and decreasing the
surface area for gas exchange.
T/F: The glottis is the opening between the vocal cords.
TRUE
T/F: The pectoralis minors and the sternocleidomastoid are useful in aiding
forced expiration.
FALSE
T/F: Carbon monoxide bonds to hemoglobin more effectively than does oxygen.
TRUE
The organs of the urinary system are
