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BIOL 235 FINAL EXAM AND PRACTICE EXAM 120
QUESTIONS AND 100%CORRECT DETAILED
ANSWERS (VERIFIED AND GRADED A+
Which cells are the main sites of gas exchange?
A) A
B) B
C) C
D) D
E) all of these choices - ANSWER-C
The muscles that elevates the ribs for breathing are the...
A) internal intercostal muscles
B) external intercostal muscles
C) diaphragm and external intercostal muscles
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D) diaphragm and internal intercostal muscles
E) all of these choices - ANSWER-B
Airway resistance is affected primarily by the
A) thickness of the cartilage in the bronchial wall
B) partial pressure of each type of gas in inspired air
C) amount of elastic tissue in the lungs
D) diameter of the bronchioles
E) amount of surfactant - ANSWER-D
The conducting airways with the air that does not undergo
respiratory exchange are known as the...
A) inspiratory volume
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B) residual volume
C) minimal volume
D) respiratory dead space
E) expiratory reserve volume - ANSWER-D
This term means the lungs and the chest wall expand
easily.
A) High surface tension
B) Low surface tension
C) High compliance
D) Low compliance
E) None of the above - ANSWER-C
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The basic steps of gas exchange, or respiration, in the
body include
A) external respiration
B) pulmonary ventilation
C) internal respiration
D) both A and B
E) A, B, and C - ANSWER-E
Which of the following would be a normal response of the
cardiovascular system to a decreased frequency of action
potentials arising from the baroreceptors?
A) increased systemic vascular resistance
B) increased parasympathetic stimulation
C) decreased heart rate
BIOL 235 FINAL EXAM AND PRACTICE EXAM 120
QUESTIONS AND 100%CORRECT DETAILED
ANSWERS (VERIFIED AND GRADED A+
Which cells are the main sites of gas exchange?
A) A
B) B
C) C
D) D
E) all of these choices - ANSWER-C
The muscles that elevates the ribs for breathing are the...
A) internal intercostal muscles
B) external intercostal muscles
C) diaphragm and external intercostal muscles
,2|Page
D) diaphragm and internal intercostal muscles
E) all of these choices - ANSWER-B
Airway resistance is affected primarily by the
A) thickness of the cartilage in the bronchial wall
B) partial pressure of each type of gas in inspired air
C) amount of elastic tissue in the lungs
D) diameter of the bronchioles
E) amount of surfactant - ANSWER-D
The conducting airways with the air that does not undergo
respiratory exchange are known as the...
A) inspiratory volume
,3|Page
B) residual volume
C) minimal volume
D) respiratory dead space
E) expiratory reserve volume - ANSWER-D
This term means the lungs and the chest wall expand
easily.
A) High surface tension
B) Low surface tension
C) High compliance
D) Low compliance
E) None of the above - ANSWER-C
, 4|Page
The basic steps of gas exchange, or respiration, in the
body include
A) external respiration
B) pulmonary ventilation
C) internal respiration
D) both A and B
E) A, B, and C - ANSWER-E
Which of the following would be a normal response of the
cardiovascular system to a decreased frequency of action
potentials arising from the baroreceptors?
A) increased systemic vascular resistance
B) increased parasympathetic stimulation
C) decreased heart rate
