Question 1

The greatest amount of carbon dioxide transported in the blood is in the form of dissolved carbon dioxide.

Accepted Answer

A) True 
 B)False

Question 2

Smokers are more susceptible to respiratory infections because

Accepted Answer

A) they congregate in small areas to smoke. 
B) their respiratory passages overproduce cilia, to which bacteria cling. 
C) their respiratory passages lose cilia, which would otherwise remove bacteria. 
D) the respiratory passages have too little mucus. 
A) they congregate in small areas to smoke. 
B) their respiratory passages overproduce cilia, to which bacteria cling. 
C) their respiratory passages lose cilia, which would otherwise remove bacteria. 
D) the respiratory passages have too little mucus.

Question 3

Which of these laryngeal cartilages is unpaired?

Accepted Answer

A) Cricoid 
B) Arytenoid 
C) Corniculate 
D) Cuneiform 
A) Cricoid 
B) Arytenoid 
C) Corniculate 
D) Cuneiform

Question 4

Coughing reflexes become faster with age.

Accepted Answer

A) True 
 B)False

Question 5

Pneumothorax is a condition in which air separates the visceral and parietal pleura in the chest, resulting in a collapsed lung. Having pneumothorax would lower the ________ of the lung.

Accepted Answer

A) intrapleural pressure 
B) surfactant production 
C) serous fluid content 
D) compliance 
A) intrapleural pressure 
B) surfactant production 
C) serous fluid content 
D) compliance

Question 6

The airplane you are riding suddenly depressurizes at 10,000 feet in the air. This causes the PO₂ of the airplane's air to drastically decrease. You pass out before you can put on your oxygen mask. After a few seconds, the PO₂ in your alveoli rapidly drops to 60 mmHg instead of the normal 104 mmHg. How will this affect blood gas concentrations?

Accepted Answer

A) PO₂ in the alveoli will be so low that oxygen will diffuse from hemoglobin into the alveoli, where it is exhaled. This causes blood oxygen concentrations to drop throughout the body. 
B) Blood PCO₂ will increase because the air contains less oxygen. 
C) Blood PO₂ will become low and much less oxygen will be delivered to tissues until cabin pressure returns. 
D) PO₂ in the alveoli will be too low for gas exchange to even occur, so tissues will receive no oxygen during the depressurization event. 
A) PO₂ in the alveoli will be so low that oxygen will diffuse from hemoglobin into the alveoli, where it is exhaled. This causes blood oxygen concentrations to drop throughout the body. 
B) Blood PCO₂ will increase because the air contains less oxygen. 
C) Blood PO₂ will become low and much less oxygen will be delivered to tissues until cabin pressure returns. 
D) PO₂ in the alveoli will be too low for gas exchange to even occur, so tissues will receive no oxygen during the depressurization event.

Question 7

Max works out about an hour every day using aerobic machines at a gym. During his moderate physical exercise, blood concentrations of

Accepted Answer

A) oxygen and carbon dioxide increase. 
B) oxygen and carbon dioxide remain nearly unchanged. 
C) oxygen decrease and carbon dioxide increase. 
D) oxygen increase and carbon dioxide decrease. 
A) oxygen and carbon dioxide increase. 
B) oxygen and carbon dioxide remain nearly unchanged. 
C) oxygen decrease and carbon dioxide increase. 
D) oxygen increase and carbon dioxide decrease.

Question 8

"I'm going to hold my breath until I die and it will be all your fault!" shrieked the 6-year-old at her father. The child was physically unable to carry out her threat because

Accepted Answer

A) she never stopped talking long enough to try to hold her breath. 
B) increased CO₂ and hydrogen ion concentration and decreased oxygen concentration stimulate chemoreceptors. 
C) decreased CO₂ and hydrogen ion concentration and increased oxygen concentration stimulate chemoreceptors. 
D) she could not take in enough oxygen. 
A) she never stopped talking long enough to try to hold her breath. 
B) increased CO₂ and hydrogen ion concentration and decreased oxygen concentration stimulate chemoreceptors. 
C) decreased CO₂ and hydrogen ion concentration and increased oxygen concentration stimulate chemoreceptors. 
D) she could not take in enough oxygen.

Question 9

Gas exchange occurs across alveolar pores.

Accepted Answer

A) True 
 B)False

Question 10

The airplane you are riding suddenly depressurizes at 10,000 feet in the air. This causes the PO₂ of the airplane's air to drastically decrease. You pass out before you can put on your oxygen mask. After being exposed to these pressure conditions for a time, PO₂ of the blood after oxygenation is only 60 mmHg. How saturated will hemoglobin be in these conditions (if the temperature remains around 38 degrees C)?

Accepted Answer

A) About 60% saturated 
B) About 85% saturated 
C) About 90% saturated 
D) About 100% saturated 
A) About 60% saturated 
B) About 85% saturated 
C) About 90% saturated 
D) About 100% saturated

Question 11

The ease with which the lungs can be expanded during breathing is called ________.

Accepted Answer

The answer of The ease with which the lungs can...

Question 12

In a mixture of gases, each gas creates a pressure called its ________.

Accepted Answer

The answer of In a mixture of gases, each gas...

Question 13

A person having an anxiety attack breathes very rapidly. After a minute, their blood CO₂ concentration appears to have lowered and they become very dazed. Their altered breathing pattern is called ________.

Accepted Answer

The answer of A person having an anxiety attack breathes...

Question 14

The right lung has ________ lobes; the left lung has ________ lobes.

Accepted Answer

A) superior, middle, and inferior; superior and inferior 
B) superior and inferior; superior, middle and inferior 
C) anterior, posterior, and lateral; superior and inferior 
D) superior, middle, and inferior; anterior and posterior 
A) superior, middle, and inferior; superior and inferior 
B) superior and inferior; superior, middle and inferior 
C) anterior, posterior, and lateral; superior and inferior 
D) superior, middle, and inferior; anterior and posterior

Question 15

The organs of the upper respiratory tract are located outside the thorax.

Accepted Answer

A) True 
 B)False

Question 16

Increased blood concentration of carbon dioxide leads to a(n)________ in levels of hydrogen ions, with both causing similar effects upon the respiratory areas.

Accepted Answer

A) increase 
B) decrease 
A) increase 
B) decrease

Question 17

You are singing a song at karaoke and reach a part that requires a louder, more intense sound. To increase your voice's volume, you

Accepted Answer

A) change the force of the air passing over the vocal cords. 
B) increase the tension on your vocal cords. 
C) change the size of the laryngeal cartilages. 
D) change the shape of the laryngeal cartilages. 
A) change the force of the air passing over the vocal cords. 
B) increase the tension on your vocal cords. 
C) change the size of the laryngeal cartilages. 
D) change the shape of the laryngeal cartilages.

Question 18

The left lung is larger than the right lung and is divided into three lobes.

Accepted Answer

A) True 
 B)False

Question 19

The force responsible for normal expiration is supplied by the

Accepted Answer

A) diaphragm. 
B) external intercostal muscles. 
C) elastic recoil of tissues and surface tension. 
D) contraction of smooth muscles in air passages. 
A) diaphragm. 
B) external intercostal muscles. 
C) elastic recoil of tissues and surface tension. 
D) contraction of smooth muscles in air passages.

Question 20

Air entering the potential space of the pleural cavity is called

Accepted Answer

A) pneumonia. 
B) pneumothorax. 
C) pulmonary ventilation. 
D) internal respiration. 
A) pneumonia. 
B) pneumothorax. 
C) pulmonary ventilation. 
D) internal respiration.

Exam 19: Respiratory System

The greatest amount of carbon dioxide transported in the blood is in the form of dissolved carbon dioxide.

Smokers are more susceptible to respiratory infections because

Which of these laryngeal cartilages is unpaired?

Coughing reflexes become faster with age.

Pneumothorax is a condition in which air separates the visceral and parietal pleura in the chest, resulting in a collapsed lung. Having pneumothorax would lower the ________ of the lung.

Max works out about an hour every day using aerobic machines at a gym. During his moderate physical exercise, blood concentrations of

"I'm going to hold my breath until I die and it will be all your fault!" shrieked the 6-year-old at her father. The child was physically unable to carry out her threat because

Gas exchange occurs across alveolar pores.

The ease with which the lungs can be expanded during breathing is called ________.

In a mixture of gases, each gas creates a pressure called its ________.

A person having an anxiety attack breathes very rapidly. After a minute, their blood CO₂ concentration appears to have lowered and they become very dazed. Their altered breathing pattern is called ________.

The right lung has ________ lobes; the left lung has ________ lobes.

The organs of the upper respiratory tract are located outside the thorax.

Increased blood concentration of carbon dioxide leads to a(n)________ in levels of hydrogen ions, with both causing similar effects upon the respiratory areas.

You are singing a song at karaoke and reach a part that requires a louder, more intense sound. To increase your voice's volume, you

The left lung is larger than the right lung and is divided into three lobes.

The force responsible for normal expiration is supplied by the

Air entering the potential space of the pleural cavity is called

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 right lung has lobes; the left lung has lobes.