Question 1

Carbon dioxide is the most important regulator of respiration because an excess will make the blood too:

Accepted Answer

A) sour 
B) salty 
C) alkaline 
D) acidic 
A) sour 
B) salty 
C) alkaline 
D) acidic

Question 2

The bronchioles differ from the bronchi in that there is no ____________________ in their walls and they may ____________________.

Accepted Answer

The answer of The bronchioles differ from the bronchi in...

Question 3

The external intercostal muscles pull the ribs:

Accepted Answer

A) up and out,for inhalation 
B) up and down,for exhalation 
C) in and down,for exhalation 
D) down and out,for inhalation 
A) up and out,for inhalation 
B) up and down,for exhalation 
C) in and down,for exhalation 
D) down and out,for inhalation

Question 4

The central nervous system (CNS)respiratory centers are located in the ____________________ and ____________________.

Accepted Answer

medulla,po

Question 5

In external respiration,carbon dioxide diffuses from the:

Accepted Answer

A) alveoli to the blood 
B) blood to the tissue fluid 
C) blood to the alveoli 
D) tissue fluid to the blood 
A) alveoli to the blood 
B) blood to the tissue fluid 
C) blood to the alveoli 
D) tissue fluid to the blood

Question 6

The importance of the tissue fluid that lines the alveoli is that it:

Accepted Answer

A) prevents friction 
B) permits sliding 
C) decreases surface tension 
D) permits diffusion of gases 
A) prevents friction 
B) permits sliding 
C) decreases surface tension 
D) permits diffusion of gases

Question 7

In internal respiration,oxygen diffuses from the ____________________ to the ____________________.

Accepted Answer

The answer of In internal respiration,oxygen diffuses from the ____________________...

Question 8

Which of the following statements are true of respiratory acidosis and alkalosis?
 (Read carefully and select all of the correct statements.)

Accepted Answer

A) A severe case of pneumonia may cause respiratory alkalosis. 
B) Hyperventilation increases the amount of CO2 exhaled and lowers the pH of body fluids. 
C) Holding your breath will increase the pH of body fluids. 
D) To compensate for metabolic alkalosis,respiration will increase in rate and depth. 
E) To compensate for metabolic acidosis,the respiratory rate will decreasE.
F)Chronic emphysema may result in respiratory acidosis. 
A) A severe case of pneumonia may cause respiratory alkalosis. 
B) Hyperventilation increases the amount of CO2 exhaled and lowers the pH of body fluids. 
C) Holding your breath will increase the pH of body fluids. 
D) To compensate for metabolic alkalosis,respiration will increase in rate and depth. 
E) To compensate for metabolic acidosis,the respiratory rate will decreasE.
F)Chronic emphysema may result in respiratory acidosis.

Question 9

The function of the soft palate is to cover the ____________________ during ____________________.

Accepted Answer

nasopharyn

Question 10

Normal inflation of alveoli is possible because ____________________ decreases the surface tension within alveoli.

Accepted Answer

pulmonary

Question 11

Which of the following statements are true of the chemical regulation of respiration? (Read carefully and select all of the correct statement.)

Accepted Answer

A) The strongest stimulus to increase breathing is a decrease in CO2 in the body fluids. 
B) The carotid bodies and jugular body contain receptors that detect decreased oxygen. 
C) Central chemoreceptors that are very sensitive to decreased CO2 are located in the cerebrum. 
D) Severe hypoxia will stimulate an increase in breathing rate and depth. 
A) The strongest stimulus to increase breathing is a decrease in CO2 in the body fluids. 
B) The carotid bodies and jugular body contain receptors that detect decreased oxygen. 
C) Central chemoreceptors that are very sensitive to decreased CO2 are located in the cerebrum. 
D) Severe hypoxia will stimulate an increase in breathing rate and depth.

Question 12

Hypoxia is a stimulus for the breathing rate to ____________________ in order to ____________________.

Accepted Answer

increase,i

Question 13

To compensate for a metabolic alkalosis,the respiratory rate will ____________________ in order to ____________________ more carbon dioxide.

Accepted Answer

The answer of To compensate for a metabolic alkalosis,the respiratory...

Question 14

To compensate for a metabolic acidosis,the respiratory rate will ____________________ in order to ____________________ more carbon dioxide.

Accepted Answer

The answer of To compensate for a metabolic acidosis,the respiratory...

Question 15

Respiratory acidosis would be most likely with a breathing rate of ____ per minute.

Accepted Answer

A) 8 
B) 14 
C) 18 
D) 32 
A) 8 
B) 14 
C) 18 
D) 32

Question 16

With respect to carbon dioxide transport,the function of hemoglobin is to:

Accepted Answer

A) carry most carbon dioxide inside the RBCs 
B) buffer hydrogen ions 
C) attach carbon dioxide to water to be transported 
D) make carbon dioxide soluble in the water of plasma 
A) carry most carbon dioxide inside the RBCs 
B) buffer hydrogen ions 
C) attach carbon dioxide to water to be transported 
D) make carbon dioxide soluble in the water of plasma

Question 17

In internal respiration,carbon dioxide diffuses from the:

Accepted Answer

A) alveoli to the blood 
B) blood to the tissue fluid 
C) blood to the alveoli 
D) tissue fluid to the blood 
A) alveoli to the blood 
B) blood to the tissue fluid 
C) blood to the alveoli 
D) tissue fluid to the blood

Question 18

Which statement is NOT true of the pleural membranes?

Accepted Answer

A) They are the serous membranes of the thoracic cavity. 
B) Serous fluid prevents friction during breathing. 
C) The parietal pleura lines the chest cavity. 
D) The visceral pleura lines the lungs. 
A) They are the serous membranes of the thoracic cavity. 
B) Serous fluid prevents friction during breathing. 
C) The parietal pleura lines the chest cavity. 
D) The visceral pleura lines the lungs.

Question 19

Oxygen is released from hemoglobin when the PO2 of the surrounding tissues is ____________________.

Accepted Answer

Question 20

In external respiration,the PO2 in the alveoli is ____________________,and the PO2 in the surrounding blood is ____________________.

Accepted Answer

Exam 15: The Respiratory System

Carbon dioxide is the most important regulator of respiration because an excess will make the blood too:

The bronchioles differ from the bronchi in that there is no ____________________ in their walls and they may ____________________.

The external intercostal muscles pull the ribs:

The central nervous system (CNS)respiratory centers are located in the ____________________ and ____________________.

In external respiration,carbon dioxide diffuses from the:

The importance of the tissue fluid that lines the alveoli is that it:

In internal respiration,oxygen diffuses from the ____________________ to the ____________________.

Which of the following statements are true of respiratory acidosis and alkalosis? (Read carefully and select all of the correct statements.)

The function of the soft palate is to cover the ____________________ during ____________________.

Normal inflation of alveoli is possible because ____________________ decreases the surface tension within alveoli.

Which of the following statements are true of the chemical regulation of respiration? (Read carefully and select all of the correct statement.)

Hypoxia is a stimulus for the breathing rate to ____________________ in order to ____________________.

To compensate for a metabolic alkalosis,the respiratory rate will ____________________ in order to ____________________ more carbon dioxide.

To compensate for a metabolic acidosis,the respiratory rate will ____________________ in order to ____________________ more carbon dioxide.

Respiratory acidosis would be most likely with a breathing rate of ____ per minute.

With respect to carbon dioxide transport,the function of hemoglobin is to:

In internal respiration,carbon dioxide diffuses from the:

Which statement is NOT true of the pleural membranes?

Oxygen is released from hemoglobin when the PO2 of the surrounding tissues is ____________________.

In external respiration,the PO2 in the alveoli is ____________________,and the PO2 in the surrounding blood is ____________________.

Organization and General Plan of the Body

Some Basic Chemistry

Cells

Tissues and Membranes

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The Senses

The Endocrine System

Blood

The Heart

The Vascular System

The Lymphatic System and Immunity

The Digestive System

Body Temperature and Metabolism

The Urinary System

Fluidelectrolyte and Acidbase Balance

The Reproductive Systems

Human Development and Genetics

An Introduction to Microbiology and Human Disease

Filters

The bronchioles differ from the bronchi in that there is no in their walls and they may .

The central nervous system (CNS)respiratory centers are located in the and .

In internal respiration,oxygen diffuses from the to the .

The function of the soft palate is to cover the during .

Hypoxia is a stimulus for the breathing rate to in order to .

To compensate for a metabolic alkalosis,the respiratory rate will in order to more carbon dioxide.

To compensate for a metabolic acidosis,the respiratory rate will in order to more carbon dioxide.

Oxygen is released from hemoglobin when the PO₂ of the surrounding tissues is ____________________.

In external respiration,the PO₂ in the alveoli is ,and the PO₂ in the surrounding blood is .