Question 1

The respiratory system is the only system involved with the exchange of gas between the cells of an organism and the external environment.

Accepted Answer

A) True 
 B)False

Question 2

For which of these gases does haemoglobin have the greatest affinity?

Accepted Answer

A) carbon dioxide 
B) oxygen 
C)  carbon monoxide 
D)  nitrogen 
A) carbon dioxide 
B) oxygen 
C)  carbon monoxide 
D)  nitrogen

Question 3

Which of these statements correctly describes inspiratory neurons?

Accepted Answer

A) They activate the phrenic nerve, bringing about contraction of the diaphragm. 
B) They are stimulated by stretch receptors. 
C)  They are inhibited by the expiratory neurons. 
A) They activate the phrenic nerve, bringing about contraction of the diaphragm. 
B) They are stimulated by stretch receptors. 
C)  They are inhibited by the expiratory neurons.

Question 4

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.)
a.anaemic hypoxia
b.circulatory hypoxia
c.histotoxic hypoxia
d.hypoxic hypoxia
-congestive heart failure

Accepted Answer

The answer of Match the types of hypoxia, labelled a....

Question 5

Which of these factors will NOT result in lower oxygen saturation of haemoglobin?

Accepted Answer

A) an increase in PO2 
B) an increase in temperature 
C)  an increase in PCO2 
D)  an increase in acidity 
A) an increase in PO2 
B) an increase in temperature 
C)  an increase in PCO2 
D)  an increase in acidity

Question 6

How is ventilation increased the most?

Accepted Answer

A) by a small increase in arterial PCO2 
B) by a small decrease in arterial PCO2 
C)  by a small increase in arterial PO2 
D)  by a small decrease in arterial PO2 
A) by a small increase in arterial PCO2 
B) by a small decrease in arterial PCO2 
C)  by a small increase in arterial PO2 
D)  by a small decrease in arterial PO2

Question 7

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.)
a.anaemic hypoxia
b.circulatory hypoxia
c.histotoxic hypoxia
d.hypoxic hypoxia
-emphysema

Accepted Answer

The answer of Match the types of hypoxia, labelled a....

Question 8

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.)
a.anaemic hypoxia
b.circulatory hypoxia
c.histotoxic hypoxia
d.hypoxic hypoxia
-haemoglobin deficiency

Accepted Answer

The answer of Match the types of hypoxia, labelled a....

Question 9

In addition to providing for gas exchange, what are the other functions of the respiratory system?

Accepted Answer

The answer of In addition to providing for gas exchange,...

Question 10

Boyle's law states that the pressure exerted by a gas varies directly with the volume of the gas.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following does NOT hold the lungs against the thoracic wall?

Accepted Answer

A) negative intrapleural pressure 
B) negative intrapulmonary pressure 
C)  cohesiveness of the pleural fluids 
D)  positive intrapulmonary pressure 
A) negative intrapleural pressure 
B) negative intrapulmonary pressure 
C)  cohesiveness of the pleural fluids 
D)  positive intrapulmonary pressure

Question 12

What factors influence the amount of gas exchange occurring at the respiratory membrane?

Accepted Answer

The answer of What factors influence the amount of gas...

Question 13

Where does the pacemaker activity that establishes the rhythmicity of breathing reside?

Accepted Answer

A) lung tissue 
B) respiratory muscles 
C)  dorsal respiratory group 
D)  phrenic nerve 
A) lung tissue 
B) respiratory muscles 
C)  dorsal respiratory group 
D)  phrenic nerve

The respiratory system is the only system involved with the exchange of gas between the cells of an organism and the external environment.

For which of these gases does haemoglobin have the greatest affinity?

Which of these statements correctly describes inspiratory neurons?

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) a.anaemic hypoxia b.circulatory hypoxia c.histotoxic hypoxia d.hypoxic hypoxia -congestive heart failure

Which of these factors will NOT result in lower oxygen saturation of haemoglobin?

How is ventilation increased the most?

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) a.anaemic hypoxia b.circulatory hypoxia c.histotoxic hypoxia d.hypoxic hypoxia -emphysema

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) a.anaemic hypoxia b.circulatory hypoxia c.histotoxic hypoxia d.hypoxic hypoxia -haemoglobin deficiency

In addition to providing for gas exchange, what are the other functions of the respiratory system?

Boyle's law states that the pressure exerted by a gas varies directly with the volume of the gas.

Which of the following does NOT hold the lungs against the thoracic wall?

What factors influence the amount of gas exchange occurring at the respiratory membrane?

Where does the pacemaker activity that establishes the rhythmicity of breathing reside?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters

Exam 11: The Blood

The respiratory system is the only system involved with the exchange of gas between the cells of an organism and the external environment.

For which of these gases does haemoglobin have the greatest affinity?

Which of these statements correctly describes inspiratory neurons?

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) a.anaemic hypoxia b.circulatory hypoxia c.histotoxic hypoxia d.hypoxic hypoxia -congestive heart failure

Which of these factors will NOT result in lower oxygen saturation of haemoglobin?

How is ventilation increased the most?

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) a.anaemic hypoxia b.circulatory hypoxia c.histotoxic hypoxia d.hypoxic hypoxia -emphysema

Match the types of hypoxia, labelled a. through d., with the circumstances. (Options may be used more than once or not at all.) a.anaemic hypoxia b.circulatory hypoxia c.histotoxic hypoxia d.hypoxic hypoxia -haemoglobin deficiency

In addition to providing for gas exchange, what are the other functions of the respiratory system?

Boyle's law states that the pressure exerted by a gas varies directly with the volume of the gas.

Which of the following does NOT hold the lungs against the thoracic wall?

What factors influence the amount of gas exchange occurring at the respiratory membrane?

Where does the pacemaker activity that establishes the rhythmicity of breathing reside?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters