Question 1

Match the lung disease to its description.
-decreased surface area for gas exchange

Accepted Answer

A) fibrotic lung disease 
B) emphysema 
C) asthma 
D) pulmonary edema 
A) fibrotic lung disease 
B) emphysema 
C) asthma 
D) pulmonary edema

Question 2

Timmy is a cantankerous toddler who has just threatened that he will hold his breath until Mom gives him some chocolate.His mother refuses to be manipulated and watches in amusement as Timmy stubbornly refuses to breathe.To her horror,Timmy loses consciousness and collapses onto the floor.Her cousin,who is enrolled in a course for emergency medical technical (EMT)training,is visiting,and tells her there is no need to call for an ambulance.Why did Timmy lose consciousness? Should his mother trust her instincts and call for help and begin CPR,or should she listen to her well-meaning but young and inexperienced cousin? Explain.

Accepted Answer

Timmy loses consciousness due to hypoxia

Question 3

________ is characterized by an increased airway resistance and decreased ventilation.

Accepted Answer

The answer of ________ is characterized by an increased airway...

Question 4

Compare and contrast carbon monoxide (CO)poisoning,in which CO displaces oxygen from hemoglobin,and metabolic poisoning such as by cyanide.

Accepted Answer

Both types of poisoning interfere with o

Question 5

Hypoxia resulting from fluid accumulation in the alveoli that cannot be corrected by oxygen therapy can lead to

Accepted Answer

A)  emphysema. 
B)  fibrotic lung disease. 
C)  asthma. 
D)  adult respiratory distress syndrome. 
E)  sudden infant death syndrome. 
A)  emphysema. 
B)  fibrotic lung disease. 
C)  asthma. 
D)  adult respiratory distress syndrome. 
E)  sudden infant death syndrome.

Question 6

In ________,fluid accumulates in the interstitial spaces of the lungs,slowing gas exchange.

Accepted Answer

The answer of In ________,fluid accumulates in the interstitial spaces...

Question 7

Generally,PO2 in arterial blood is ________ than PO2 in venous blood.

Accepted Answer

Question 8

List and explain the factors that influence the presence of gases in liquids.

Accepted Answer

Pressure,solubility,and temper

Question 9

The ________ group of neurons contains mostly inspiratory neurons.The ________ group of neurons controls muscles used for active expiration and some inspiratory muscles.

Accepted Answer

dorsal res

Question 10

The output of the ________ group of inspiratory neurons controls the ________ muscle(s)by way of the ________ nerve.

Accepted Answer

dorsal respiratory,d

Question 11

The expiratory neurons control the ________ muscles,whereas the inspiratory neurons control the ________ muscles.

Accepted Answer

A)  diaphragm and external intercostal, abdominal and internal intercostal 
B)  abdominal and internal intercostal, diaphragm and external intercostal 
C)  diaphragm and internal intercostal, abdominal and external intercostal 
D)  abdominal and external intercostal, diaphragm and internal intercostal 
E)  diaphragm and abdominal, intercostal internal and external 
A)  diaphragm and external intercostal, abdominal and internal intercostal 
B)  abdominal and internal intercostal, diaphragm and external intercostal 
C)  diaphragm and internal intercostal, abdominal and external intercostal 
D)  abdominal and external intercostal, diaphragm and internal intercostal 
E)  diaphragm and abdominal, intercostal internal and external

Question 12

Carbon dioxide is more soluble in water than oxygen.To get the same amount of oxygen to dissolve in plasma as carbon dioxide,you would have to

Accepted Answer

A)  decrease the temperature of the plasma. 
B)  increase the partial pressure of oxygen. 
C)  decrease the partial pressure of nitrogen. 
D)  increase the rate of plasma flow through the lungs. 
E)  decrease the alveolar ventilation rate. 
A)  decrease the temperature of the plasma. 
B)  increase the partial pressure of oxygen. 
C)  decrease the partial pressure of nitrogen. 
D)  increase the rate of plasma flow through the lungs. 
E)  decrease the alveolar ventilation rate.

Question 13

Chronic hypoxia

Accepted Answer

A)  increases 2,3-DPG production in blood. 
B)  shifts the HbO2 dissociation curve to the left. 
C)  can be caused by anemia. 
D)  increases 2,3-DPG production in blood and can result from anemia. 
E)  All of the answers are correct. 
A)  increases 2,3-DPG production in blood. 
B)  shifts the HbO2 dissociation curve to the left. 
C)  can be caused by anemia. 
D)  increases 2,3-DPG production in blood and can result from anemia. 
E)  All of the answers are correct.

Question 14

Most of the oxygen transported by the blood is

Accepted Answer

A)  dissolved in plasma. 
B)  bound to hemoglobin. 
C)  in ionic form as solute in the plasma. 
D)  bound to a plasma protein. 
E)  carried by white blood cells. 
A)  dissolved in plasma. 
B)  bound to hemoglobin. 
C)  in ionic form as solute in the plasma. 
D)  bound to a plasma protein. 
E)  carried by white blood cells.

Question 15

Inappropriate relaxation of the ________ muscles during sleep contributes to ________,a sleep disorder associated with snoring.

Accepted Answer

mouth and throat (la

Question 16

At a PO2 of 70 mm Hg and normal temperature and pH,hemoglobin is ________% saturated with oxygen.

Accepted Answer

A)  10 
B)  25 
C)  50 
D)  75 
E)  over 90 
A)  10 
B)  25 
C)  50 
D)  75 
E)  over 90

Question 17

Fear and excitement may affect the pace and depth of respiration by stimulation of portions of the ________.

Accepted Answer

The answer of Fear and excitement may affect the pace...

Question 18

Diffusion rate is indirectly proportional to ________.

Accepted Answer

The answer of Diffusion rate is indirectly proportional to ________....

Question 19

A student in your lab volunteers to enter a hypoxic breathing chamber for 10 minutes,and his alveolar PO2 drops to 50 mm Hg.What other change would occur?

Accepted Answer

A)  decrease in arterial pH 
B)  decrease in arterial PCO2 
C)  decrease in pH of cerebrospinal fluid 
D)  increase in alveolar PCO2 
E)  hypoventilation 
A)  decrease in arterial pH 
B)  decrease in arterial PCO2 
C)  decrease in pH of cerebrospinal fluid 
D)  increase in alveolar PCO2 
E)  hypoventilation

Question 20

Which of the following would make the oxygen-hemoglobin curve shift right?

Accepted Answer

A)  increased H+ concentration 
B)  increased pH 
C)  decreased temperature 
D)  decreased CO2 
E)  None of the answers are correct. 
A)  increased H+ concentration 
B)  increased pH 
C)  decreased temperature 
D)  decreased CO2 
E)  None of the answers are correct.

Exam 18: Gas Exchange and Transport

Match the lung disease to its description. -decreased surface area for gas exchange

________ is characterized by an increased airway resistance and decreased ventilation.

Compare and contrast carbon monoxide (CO)poisoning,in which CO displaces oxygen from hemoglobin,and metabolic poisoning such as by cyanide.

Hypoxia resulting from fluid accumulation in the alveoli that cannot be corrected by oxygen therapy can lead to

In ________,fluid accumulates in the interstitial spaces of the lungs,slowing gas exchange.

Generally,PO2 in arterial blood is ________ than PO2 in venous blood.

List and explain the factors that influence the presence of gases in liquids.

The ________ group of neurons contains mostly inspiratory neurons.The ________ group of neurons controls muscles used for active expiration and some inspiratory muscles.

The output of the ________ group of inspiratory neurons controls the ________ muscle(s)by way of the ________ nerve.

The expiratory neurons control the ________ muscles,whereas the inspiratory neurons control the ________ muscles.

Carbon dioxide is more soluble in water than oxygen.To get the same amount of oxygen to dissolve in plasma as carbon dioxide,you would have to

Chronic hypoxia

Most of the oxygen transported by the blood is

Inappropriate relaxation of the ________ muscles during sleep contributes to ________,a sleep disorder associated with snoring.

At a PO2 of 70 mm Hg and normal temperature and pH,hemoglobin is ________% saturated with oxygen.

Fear and excitement may affect the pace and depth of respiration by stimulation of portions of the ________.

Diffusion rate is indirectly proportional to ________.

A student in your lab volunteers to enter a hypoxic breathing chamber for 10 minutes,and his alveolar PO2 drops to 50 mm Hg.What other change would occur?

Which of the following would make the oxygen-hemoglobin curve shift right?

Introduction to Physiology

Molecular Interactions

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Sensory Physiology

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Cardiovascular Physiology

Blood Flow and the Control of Blood Pressure

Blood

Mechanics of Breathing

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Integrative Physiology III: Exercise

Reproduction and Development

Filters

Generally,P_O₂ in arterial blood is ________ than P_O₂in venous blood.

The group of neurons contains mostly inspiratory neurons.The group of neurons controls muscles used for active expiration and some inspiratory muscles.

The output of the group of inspiratory neurons controls the muscle(s)by way of the nerve.

The expiratory neurons control the muscles,whereas the inspiratory neurons control the muscles.

Inappropriate relaxation of the muscles during sleep contributes to ,a sleep disorder associated with snoring.

At a P_O₂ of 70 mm Hg and normal temperature and pH,hemoglobin is ________% saturated with oxygen.

A student in your lab volunteers to enter a hypoxic breathing chamber for 10 minutes,and his alveolar P_O₂ drops to 50 mm Hg.What other change would occur?