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Exam_11_Chapter_23.docx.docx-Question 1 2.5 out of 2.5
Page 7
Answers:
inter-alveolar pressure increases.
elastic tissues of the lungs, thoracic cage, and abdominal organs
recoil.
air is squeezed out of the lungs.
the diaphragm and external respiratory muscles relax.
Question 23
0 out of 2.5 points
Yawning occurs due to
Selected
Answer:
deep breath being taken while the glottis is closed and air is forced
against the closure.
Answers:
a deep breath being taken.
deep breaths released in a series of short expirations.
the diaphragm contracting spasmodically while the glottis is closed.
deep breath being taken while the glottis is closed and air is forced
against the closure.
Question 24
0 out of 2.5 points
The left lung is larger than the right lung and is divided into three lobes.
Selected
Answer:
Tru
e
Answers:
Tru
e
Fals
e
Question 25
2.5 out of 2.5 points
The condition of newborns called respiratory distress syndrome is caused by a
Selected
Answer:
lack of surfactant.
Answers:
lack of surfactant.
lack of a hyaline membrane.
low oxygen concentration.
high oxygen concentration.


Page 8
Question 26
2.5 out of 2.5 points
The dorsal respiratory group and the ventral respiratory group are found extending
throughout which structure?
Selected
Answer:
medulla oblongata
Answers:
hypothalamus
pons
medulla oblongata
cerebellum
Question 27
2.5 out of 2.5 points
The organs of the upper respiratory tract are located outside the thorax.
Selected
Answer:
Tru
e
Answers:
Tru
e
Fals
e
Question 28
2.5 out of 2.5 points
The force responsible for normal expiration is supplied by the
Selected
Answer:
elastic recoil of tissues and surface tension.
Answers:
diaphragm.
external intercostal muscles.
elastic recoil of tissues and surface tension.
contraction of smooth muscles in air passages.
Question 29
2.5 out of 2.5 points
The intensity (volume) of a vocal sound is a result of the
Selected
Answer:
force of air passing over the vocal cords.
Answers:
force of air passing over the vocal cords.


Page 9
tension on the vocal cords.
size of the laryngeal cartilage.
shape of the laryngeal cartilage.
Question 30
2.5 out of 2.5 points
The ventral portion of the medulla oblongata, near the origin of the vagus nerve is
home to
Selected
Answer:
central chemoreceptors
Answers:
baroreceptors
mechanoreceptors
central chemoreceptors
peripheral chemoreceptors
Question 31
2.5 out of 2.5 points
The glottis is the opening between the vocal cords.
Selected
Answer:
Tru
e
Answers:
Tru
e
Fals
e
Question 32
2.5 out of 2.5 points
The condition in which air enters the pleural cavity is called
Selected
Answer:
pneumothorax.
Answers:
pneumonia.
pneumothorax.
pulmonary ventilation.
internal respiration.
Question 33
2.5 out of 2.5 points
The right lung is composed of ______ lobes; the left lung is composed of ______
lobes.


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