Question 1

Inspiratory events occur because

Accepted Answer

A)  The air pressure in the alveoli is greater than that of the atmosphere. 
B)  The air pressure in the alveoli is less than that of the atmosphere. 
C)  The volume of the thoracic cavity increases. 
D)  The air pressure in the alveoli is greater than that of the atmosphere, and the volume of the thoracic cavity increases. 
E)  The air pressure in the alveoli is less than that of the atmosphere, and the volume of the thoracic cavity increases. 
A)  The air pressure in the alveoli is greater than that of the atmosphere. 
B)  The air pressure in the alveoli is less than that of the atmosphere. 
C)  The volume of the thoracic cavity increases. 
D)  The air pressure in the alveoli is greater than that of the atmosphere, and the volume of the thoracic cavity increases. 
E)  The air pressure in the alveoli is less than that of the atmosphere, and the volume of the thoracic cavity increases.

Question 2

Which of the following does not bring about increased airway resistance?

Accepted Answer

A)  asthma 
B)  epinephrine 
C)  slow-reactive substance of anaphylaxis 
D)  emphysema 
E)  excess mucus production 
A)  asthma 
B)  epinephrine 
C)  slow-reactive substance of anaphylaxis 
D)  emphysema 
E)  excess mucus production

Question 3

The minimum volume of air that remains in the lungs after a maximal expiration is termed the

Accepted Answer

A)  tidal volume 
B)  functional residual capacity 
C)  residual volume 
D)  vital capacity 
E)  none of these, since no air remains in the lungs after maximal expiration 
A)  tidal volume 
B)  functional residual capacity 
C)  residual volume 
D)  vital capacity 
E)  none of these, since no air remains in the lungs after maximal expiration

Question 4

If the tidal volume is 500 ml and the anatomic dead space volume is 150 ml, only 350 ml of air enters the alveoli during inspiration.

Accepted Answer

A) True 
 B)False

Question 5

Complete each of the following statments.
The ____________________ effect refers to the increased affinity of Hb for CO2 and H+ after O2 unloading.

Accepted Answer

Question 6

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

Accepted Answer

A) True 
 B)False

Question 7

Complete each of the following statments.
The apneustic and pneumotaxic centers are located in the ____________________ (specific part of brain).

Accepted Answer

The answer of Complete each of the following statments.
The apneustic...

Question 8

O2 levels are much more closely regulated than CO2 levels in the arterial blood.

Accepted Answer

A) True 
 B)False

Question 9

Which factor would result in bronchoconstriction?

Accepted Answer

A)  sympathetic stimulation 
B)  parasympathetic stimulation 
C)  epinephrine secretion 
D)  increased carbon dioxide concentration 
E)  none of these 
A)  sympathetic stimulation 
B)  parasympathetic stimulation 
C)  epinephrine secretion 
D)  increased carbon dioxide concentration 
E)  none of these

Question 10

Complete each of the following statments.
____________________ is the inflammation of the pleural sac.

Accepted Answer

The answer of Complete each of the following statments.
____________________ is...

Question 11

Administering O2 to patients with severe chronic lung disease will not depress their drive to breathe.

Accepted Answer

A) True 
 B)False

Question 12

The brain region that provides output to the respiratory muscles is located in the

Accepted Answer

A)  pons 
B)  medulla 
C)  cerebral cortex 
D)  cerebellum 
E)  hypothalamus 
A)  pons 
B)  medulla 
C)  cerebral cortex 
D)  cerebellum 
E)  hypothalamus

Question 13

Complete each of the following statments.
When relaxing, the diaphragm moves ____________________, resulting in a(n) increase in thoracic pressure.

Accepted Answer

The answer of Complete each of the following statments.
When relaxing,...

Question 14

Pores of Kohn permit air flow between adjacent alveoli, a process known as collateral ventilation.

Accepted Answer

A) True 
 B)False

Question 15

The percent of hemoglobin saturation

Accepted Answer

A)  decreases as $\mathrm { P } _ { 0 _ { 2 } }$ increases 
B)  decreases as $\mathrm { P } _ { \mathrm { Co } _ { 2 } }$ increases 
C)  decreases as H+ decreases 
D)  decreases as body temperature decreases 
E)  none of these 
A)  decreases as $\mathrm { P } _ { 0 _ { 2 } }$ increases 
B)  decreases as $\mathrm { P } _ { \mathrm { Co } _ { 2 } }$ increases 
C)  decreases as H+ decreases 
D)  decreases as body temperature decreases 
E)  none of these

Question 16

Approximately what percent of carbon dioxide is transported in the blood dissolved in dissolved form?

Accepted Answer

A)  1.5 
B)  10 
C)  35 
D)  60 
E)  100 
A)  1.5 
B)  10 
C)  35 
D)  60 
E)  100

Question 17

Pulmonary surfactant is secreted by Type II alveolar cells.

Accepted Answer

A) True 
 B)False

Question 18

During inspiration

Accepted Answer

A)  Intra-alveolar pressure falls below atmospheric pressure. 
B)  The diaphragm contracts. 
C)  The internal intercostal muscles contract. 
D)  Intra-alveolar pressure falls below atmospheric pressure and the diaphragm contracts. 
E)  All of these. 
A)  Intra-alveolar pressure falls below atmospheric pressure. 
B)  The diaphragm contracts. 
C)  The internal intercostal muscles contract. 
D)  Intra-alveolar pressure falls below atmospheric pressure and the diaphragm contracts. 
E)  All of these.

Question 19

Complete each of the following statments.
An increase of ____________________ ions in the arterial blood changes the respiratory rate by increasing it.

Accepted Answer

The answer of Complete each of the following statments.
An increase...

Question 20

The intrapulmonary pressure

Accepted Answer

A)  is the pressure within the air sacs of the lung 
B)  always equilibrates with atmospheric pressure 
C)  is always less than intrapleural pressure 
D)  is the pressure within the air sacs of the lung, and always equilibrates with atmospheric pressure 
E)  all of these 
A)  is the pressure within the air sacs of the lung 
B)  always equilibrates with atmospheric pressure 
C)  is always less than intrapleural pressure 
D)  is the pressure within the air sacs of the lung, and always equilibrates with atmospheric pressure 
E)  all of these

Exam 13: A--The Respiratory System

Inspiratory events occur because

Which of the following does not bring about increased airway resistance?

The minimum volume of air that remains in the lungs after a maximal expiration is termed the

If the tidal volume is 500 ml and the anatomic dead space volume is 150 ml, only 350 ml of air enters the alveoli during inspiration.

Complete each of the following statments. The ____________________ effect refers to the increased affinity of Hb for CO2 and H+ after O2 unloading.

The quantity of air that will flow into and out of the lungs depends solely on the radius of the respiratory airways.

Complete each of the following statments. The apneustic and pneumotaxic centers are located in the ____________________ (specific part of brain).

O2 levels are much more closely regulated than CO2 levels in the arterial blood.

Which factor would result in bronchoconstriction?

Complete each of the following statments. ____________________ is the inflammation of the pleural sac.

Administering O2 to patients with severe chronic lung disease will not depress their drive to breathe.

The brain region that provides output to the respiratory muscles is located in the

Complete each of the following statments. When relaxing, the diaphragm moves ____________________, resulting in a(n) increase in thoracic pressure.

Pores of Kohn permit air flow between adjacent alveoli, a process known as collateral ventilation.

The percent of hemoglobin saturation

Approximately what percent of carbon dioxide is transported in the blood dissolved in dissolved form?

Pulmonary surfactant is secreted by Type II alveolar cells.

During inspiration

Complete each of the following statments. An increase of ____________________ ions in the arterial blood changes the respiratory rate by increasing it.

The intrapulmonary pressure

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Complete each of the following statments. The ____________________ effect refers to the increased affinity of Hb for CO₂ and H⁺ after O₂ unloading.

O₂ levels are much more closely regulated than CO₂ levels in the arterial blood.

Administering O₂ to patients with severe chronic lung disease will not depress their drive to breathe.