Question 1

The effect of smoking on the respiratory tract includes

Accepted Answer

A)  reduced production of mucus. 
B)  increased development of cells. 
C)  immobilization of ciliated cells. 
D)  destruction of white blood cells that patrol the respiratory tract. 
E)  both immobilization of ciliated cells and destruction of white blood cells that patrol the respiratory tract. 
A)  reduced production of mucus. 
B)  increased development of cells. 
C)  immobilization of ciliated cells. 
D)  destruction of white blood cells that patrol the respiratory tract. 
E)  both immobilization of ciliated cells and destruction of white blood cells that patrol the respiratory tract.

Question 2

Which of the following is NOT a risk factor for lung cancer?

Accepted Answer

A)  smoking 
B)  asbestos exposure 
C)  radiation 
D)  exposure to industrial chemicals 
E)  regular exercise 
A)  smoking 
B)  asbestos exposure 
C)  radiation 
D)  exposure to industrial chemicals 
E)  regular exercise

Question 3

Match between columns
                        Premises: This is the location of the voice box.
Air moves from the nasal cavity into this component.
Spent air moves from the bronchial tubes back to this component.
This is the last component of the human lung that air flows into.
This is the site of gas exchange between the air in the lungs and their blood supply.

Accepted Answer

The Answer of larynx and trachea and alveolus. and pharynx is...

Question 4

Which statement is true?

Accepted Answer

A)  Breathing rate and depth are completely under voluntary control. 
B)  A person can commit suicide by holding his or her breath. 
C)  The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain. 
D)  There are chemoreceptors in the brain that monitor carbon dioxide content in the blood and control breathing. 
E)  The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain, and there are chemo-receptors in the brain that monitor carbon dioxide content in the blood and control breathing. 
A)  Breathing rate and depth are completely under voluntary control. 
B)  A person can commit suicide by holding his or her breath. 
C)  The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain. 
D)  There are chemoreceptors in the brain that monitor carbon dioxide content in the blood and control breathing. 
E)  The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain, and there are chemo-receptors in the brain that monitor carbon dioxide content in the blood and control breathing.

Question 5

A normal tidal volume is

Accepted Answer

A)  1000 milliliters. 
B)  1500 milliliters. 
C)  250 milliliters. 
D)  750 milliliters. 
E)  500 milliliters. 
A)  1000 milliliters. 
B)  1500 milliliters. 
C)  250 milliliters. 
D)  750 milliliters. 
E)  500 milliliters.

Question 6

Food and drink are prevented from entering the respiratory passageways during swallowing by means of the

Accepted Answer

A)  glottis. 
B)  pharynx. 
C)  epiglottis. 
D)  larynx. 
E)  trachea. 
A)  glottis. 
B)  pharynx. 
C)  epiglottis. 
D)  larynx. 
E)  trachea.

Question 7

Selecting the Exception Four of the five answers listed below are components of the human respiratory system. Select the exception.

Accepted Answer

A)  thoracic cavity 
B)  trachea 
C)  diaphragm 
D)  spiracle 
E)  larynx 
A)  thoracic cavity 
B)  trachea 
C)  diaphragm 
D)  spiracle 
E)  larynx

Question 8

Actual exchange of gases in the lungs occurs in the

Accepted Answer

A)  bronchi. 
B)  alveoli. 
C)  bronchioles. 
D)  tracheas. 
E)  glottis. 
A)  bronchi. 
B)  alveoli. 
C)  bronchioles. 
D)  tracheas. 
E)  glottis.

Question 9

External respiration

Accepted Answer

A)  moves carbon dioxide from alveoli into the blood. 
B)  moves oxygen from alveoli into the blood. 
C)  moves oxygen from the blood into alveoli and carbon dioxide in the opposite direction. 
D)  moves oxygen from alveoli into the blood and carbon dioxide in the opposite direction. 
E)  moves both oxygen and carbon dioxide from alveoli into the blood. 
A)  moves carbon dioxide from alveoli into the blood. 
B)  moves oxygen from alveoli into the blood. 
C)  moves oxygen from the blood into alveoli and carbon dioxide in the opposite direction. 
D)  moves oxygen from alveoli into the blood and carbon dioxide in the opposite direction. 
E)  moves both oxygen and carbon dioxide from alveoli into the blood.

Question 10

The lungs move easily within their protective sacs due to

Accepted Answer

A)  intrapleural fluid. 
B)  leaking plasma. 
C)  blood. 
D)  mucus. 
E)  both leaking plasma and mucus. 
A)  intrapleural fluid. 
B)  leaking plasma. 
C)  blood. 
D)  mucus. 
E)  both leaking plasma and mucus.

Question 11

During inhalation,

Accepted Answer

A)  the pressure in the thoracic cavity is greater than the pressure within the lungs. 
B)  the pressure in the pleural sac is less than the pressure within the lungs. 
C)  the diaphragm moves upward and becomes more curved. 
D)  the chest cavity volume decreases. 
E)  movement of the diaphragm is inhibited. 
A)  the pressure in the thoracic cavity is greater than the pressure within the lungs. 
B)  the pressure in the pleural sac is less than the pressure within the lungs. 
C)  the diaphragm moves upward and becomes more curved. 
D)  the chest cavity volume decreases. 
E)  movement of the diaphragm is inhibited.

Question 12

Oxygen and carbon dioxide are exchanged due to the process of

Accepted Answer

A)  osmosis. 
B)  facilitated diffusion. 
C)  diffusion. 
D)  Brownian movement. 
E)  active transport. 
A)  osmosis. 
B)  facilitated diffusion. 
C)  diffusion. 
D)  Brownian movement. 
E)  active transport.

Question 13

The atmospheric pressure at sea level is

Accepted Answer

A)  1,000 mm Hg. 
B)  760 mm Hg. 
C)  540 mm Hg. 
D)  400 mm Hg. 
E)  320 mm Hg. 
A)  1,000 mm Hg. 
B)  760 mm Hg. 
C)  540 mm Hg. 
D)  400 mm Hg. 
E)  320 mm Hg.

Question 14

Pneumonia may be caused by all of the following EXCEPT

Accepted Answer

A)  bacteria. 
B)  viruses. 
C)  fungi. 
D)  influenza. 
E)  anemia. 
A)  bacteria. 
B)  viruses. 
C)  fungi. 
D)  influenza. 
E)  anemia.

Question 15

Which of the following is NOT a function of the nasal cavities?

Accepted Answer

A)  filter dust out of the incoming air 
B)  detect odors 
C)  warm the air 
D)  oxygenate the blood 
E)  moisturize the air 
A)  filter dust out of the incoming air 
B)  detect odors 
C)  warm the air 
D)  oxygenate the blood 
E)  moisturize the air

Question 16

The concentration of nitrogen in the earth's atmosphere is approximately

Accepted Answer

A)  78 percent. 
B)  66 percent. 
C)  50 percent. 
D)  33 percent. 
E)  20 percent. 
A)  78 percent. 
B)  66 percent. 
C)  50 percent. 
D)  33 percent. 
E)  20 percent.

Question 17

Which chemical secreted in the alveoli reduces surface tension?

Accepted Answer

A)  oxyhemoglobin 
B)  pulmonary surfactant 
C)  carboxyhemoglobin 
D)  secretory IgA 
E)  mucus 
A)  oxyhemoglobin 
B)  pulmonary surfactant 
C)  carboxyhemoglobin 
D)  secretory IgA 
E)  mucus

Question 18

Decompression sickness ("the bends") is caused by

Accepted Answer

A)  a rapid rise of carbon dioxide in the blood. 
B)  lack of oxygen in the tissues. 
C)  bubbles of nitrogen in the blood. 
D)  glucose deficiency. 
E)  descending too rapidly into deep water. 
A)  a rapid rise of carbon dioxide in the blood. 
B)  lack of oxygen in the tissues. 
C)  bubbles of nitrogen in the blood. 
D)  glucose deficiency. 
E)  descending too rapidly into deep water.

Question 19

If too little carbon dioxide is moving out of the lungs,

Accepted Answer

A)  bronchioles relax and widen. 
B)  bronchioles constrict and narrow. 
C)  alveoli relax. 
D)  alveoli constrict. 
E)  the diaphragm enters tetany. 
A)  bronchioles relax and widen. 
B)  bronchioles constrict and narrow. 
C)  alveoli relax. 
D)  alveoli constrict. 
E)  the diaphragm enters tetany.

Question 20

The rate and depth of breathing are governed by all of the following EXCEPT

Accepted Answer

A)  chemoreceptors in arterial walls. 
B)  baroreceptors in the diaphragm. 
C)  the partial pressure of O2 in the atmosphere. 
D)  a respiratory center in the brainstem. 
E)  carotid and aortic bodies. 
A)  chemoreceptors in arterial walls. 
B)  baroreceptors in the diaphragm. 
C)  the partial pressure of O2 in the atmosphere. 
D)  a respiratory center in the brainstem. 
E)  carotid and aortic bodies.

Exam 10: The Respiratory System

The effect of smoking on the respiratory tract includes

Which of the following is NOT a risk factor for lung cancer?

Which statement is true?

A normal tidal volume is

Food and drink are prevented from entering the respiratory passageways during swallowing by means of the

Selecting the Exception Four of the five answers listed below are components of the human respiratory system. Select the exception.

Actual exchange of gases in the lungs occurs in the

External respiration

The lungs move easily within their protective sacs due to

During inhalation,

Oxygen and carbon dioxide are exchanged due to the process of

The atmospheric pressure at sea level is

Pneumonia may be caused by all of the following EXCEPT

Which of the following is NOT a function of the nasal cavities?

The concentration of nitrogen in the earth's atmosphere is approximately

Which chemical secreted in the alveoli reduces surface tension?

Decompression sickness ("the bends") is caused by

If too little carbon dioxide is moving out of the lungs,

The rate and depth of breathing are governed by all of the following EXCEPT

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

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