Question 1

When carbon dioxide bonds to hemoglobin, the compound ________ forms.

Accepted Answer

The answer of When carbon dioxide bonds to hemoglobin, the...

Question 2

The vocal cords are in the

Accepted Answer

A) pharynx. 
B) larynx. 
C) trachea. 
D) oral cavity. 
A) pharynx. 
B) larynx. 
C) trachea. 
D) oral cavity.

Question 3

Changes in the respiratory system that accompany aging include

Accepted Answer

A) thinning mucus. 
B) thickening of the alveolar walls. 
C) overactive cilia, causing frequent coughing. 
D) slowed swallowing reflex. 
A) thinning mucus. 
B) thickening of the alveolar walls. 
C) overactive cilia, causing frequent coughing. 
D) slowed swallowing reflex.

Question 4

In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

Accepted Answer

A) the odor. 
B) very small particles of debris. 
C) very large particles of debris. 
D) falling material from damaged buildings. 
A) the odor. 
B) very small particles of debris. 
C) very large particles of debris. 
D) falling material from damaged buildings.

Question 5

The amount of oxygen released from oxyhemoglobin increases when

Accepted Answer

A) carbon dioxide concentration decreases. 
B) carbon dioxide concentration increases. 
C) temperature decreases. 
D) blood becomes more alkaline. 
A) carbon dioxide concentration decreases. 
B) carbon dioxide concentration increases. 
C) temperature decreases. 
D) blood becomes more alkaline.

Question 6

The volume of air that enters (or leaves)during a single respiratory cycle is the

Accepted Answer

A) inspiratory reserve volume. 
B) vital capacity. 
C) tidal volume. 
D) expiratory reserve volume. 
A) inspiratory reserve volume. 
B) vital capacity. 
C) tidal volume. 
D) expiratory reserve volume.

Question 7

Which statement describes the trachea?

Accepted Answer

A) It is lined with simple squamous epithelium. 
B) It is comprised of 20 C-shaped cartilage rings. 
C) It is a passageway for food and for air. 
D) It contains no air-filtering mechanisms. 
A) It is lined with simple squamous epithelium. 
B) It is comprised of 20 C-shaped cartilage rings. 
C) It is a passageway for food and for air. 
D) It contains no air-filtering mechanisms.

Question 8

Carbon dioxide is sometimes added to the air that a patient breathes in order to

Accepted Answer

A) increase the rate and decrease the depth of breathing. 
B) increase the rate and depth of breathing. 
C) decrease the rate and increase the depth of breathing. 
D) decrease the rate and depth of breathing. 
A) increase the rate and decrease the depth of breathing. 
B) increase the rate and depth of breathing. 
C) decrease the rate and increase the depth of breathing. 
D) decrease the rate and depth of breathing.

Question 9

Which of the following factors does not directly affect breathing rate?

Accepted Answer

A) Partial pressure of oxygen in body fluids 
B) Partial pressure of carbon dioxide in body fluids 
C) Degree of lung tissue stretch 
D) Size of residual volume 
A) Partial pressure of oxygen in body fluids 
B) Partial pressure of carbon dioxide in body fluids 
C) Degree of lung tissue stretch 
D) Size of residual volume

Question 10

The first event in expiration is

Accepted Answer

A) inter-alveolar pressure increases. 
B) elastic tissues of the lungs, thoracic cage, and abdominal organs recoil. 
C) air is squeezed out of the lungs. 
D) the diaphragm and external intercostal respiratory muscles relax. 
A) inter-alveolar pressure increases. 
B) elastic tissues of the lungs, thoracic cage, and abdominal organs recoil. 
C) air is squeezed out of the lungs. 
D) the diaphragm and external intercostal respiratory muscles relax.

Question 11

The ventral part of the medulla oblongata near the origin of the vagus nerve is the location of

Accepted Answer

A) baroreceptors. 
B) mechanoreceptors. 
C) central chemoreceptors. 
D) peripheral chemoreceptors. 
A) baroreceptors. 
B) mechanoreceptors. 
C) central chemoreceptors. 
D) peripheral chemoreceptors.

Question 12

A sudden contraction of the diaphragm while the glottis is closed produces a sneeze.

Accepted Answer

A) True 
 B)False

Question 13

The pharynx functions as a ________, whereas the larynx functions as a ________.

Accepted Answer

A) common passage for air and food; passageway for food only 
B) passageway for air only; passageway for air and food 
C) common passageway for air and food; passageway for air only 
D) passageway for food only, passageway for air and food 
A) common passage for air and food; passageway for food only 
B) passageway for air only; passageway for air and food 
C) common passageway for air and food; passageway for air only 
D) passageway for food only, passageway for air and food

Question 14

Arielle is an 8-year-old with cystic fibrosis. For 30 minutes each morning and evening, a parent holds her body in various positions and massages and kneads the areas over her lungs to dislodge the abundant, sticky mucus, which Arielle spits into a jar. She also takes medication that thins the mucus. If she didn't take these measures, the mucus in her lungs would most likely increase her risk of

Accepted Answer

A) cancer. 
B) emphysema. 
C) infection. 
D) asthma. 
A) cancer. 
B) emphysema. 
C) infection. 
D) asthma.

Question 15

Respiration is

Accepted Answer

A) breathing. 
B) making ATP. 
C) the entire process of gas exchange between the atmosphere and cells. 
D) circulating blood to tissues. 
A) breathing. 
B) making ATP. 
C) the entire process of gas exchange between the atmosphere and cells. 
D) circulating blood to tissues.

Question 16

The respiratory membrane consists of

Accepted Answer

A) a single thickness of epithelial cells. 
B) a single thickness of epithelial cells and a basement membrane. 
C) two thicknesses of epithelial cells. 
D) two thicknesses of epithelial cells and basement membranes. 
A) a single thickness of epithelial cells. 
B) a single thickness of epithelial cells and a basement membrane. 
C) two thicknesses of epithelial cells. 
D) two thicknesses of epithelial cells and basement membranes.

Question 17

Which of the following has an effect on the pH of blood?

Accepted Answer

A) Oxygen 
B) Phosphate 
C) Carbon dioxide 
D) Nitrogen 
A) Oxygen 
B) Phosphate 
C) Carbon dioxide 
D) Nitrogen

Question 18

The pectoralis minor muscles and the sternocleidomastoid muscles are useful in aiding forced expiration.

Accepted Answer

A) True 
 B)False

Question 19

Police stop a very drunk Richard for driving erratically at 3 AM and give him a breathalyzer test, which he fails miserably. Why does he fail so badly?

Accepted Answer

A) The thinness of his respiratory membranes allows volatile alcohol molecules to enter the alveoli and become detectable by the machine. 
B) The thickness of his respiratory membranes prevent alcohol from evaporating out of his blood. 
C) His alveoli are in excellent condition. 
D) Excess surfactant has been secreted in response to alcohol. 
A) The thinness of his respiratory membranes allows volatile alcohol molecules to enter the alveoli and become detectable by the machine. 
B) The thickness of his respiratory membranes prevent alcohol from evaporating out of his blood. 
C) His alveoli are in excellent condition. 
D) Excess surfactant has been secreted in response to alcohol.

Question 20

A sudden inspiration caused by a spasmodic contraction of the diaphragm while the glottis is closed is a

Accepted Answer

A) yawn. 
B) laugh. 
C) sneeze. 
D) hiccup. 
A) yawn. 
B) laugh. 
C) sneeze. 
D) hiccup.

Exam 19: Respiratory System

When carbon dioxide bonds to hemoglobin, the compound ________ forms.

The vocal cords are in the

Changes in the respiratory system that accompany aging include

In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

The amount of oxygen released from oxyhemoglobin increases when

The volume of air that enters (or leaves)during a single respiratory cycle is the

Which statement describes the trachea?

Carbon dioxide is sometimes added to the air that a patient breathes in order to

Which of the following factors does not directly affect breathing rate?

The first event in expiration is

The ventral part of the medulla oblongata near the origin of the vagus nerve is the location of

A sudden contraction of the diaphragm while the glottis is closed produces a sneeze.

The pharynx functions as a ________, whereas the larynx functions as a ________.

Respiration is

The respiratory membrane consists of

Which of the following has an effect on the pH of blood?

The pectoralis minor muscles and the sternocleidomastoid muscles are useful in aiding forced expiration.

Police stop a very drunk Richard for driving erratically at 3 AM and give him a breathalyzer test, which he fails miserably. Why does he fail so badly?

A sudden inspiration caused by a spasmodic contraction of the diaphragm while the glottis is closed is a

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Divisions of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

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The pharynx functions as a , whereas the larynx functions as a .