Question 1

Walking around at an altitude of 5000 m, you could expect which of the following responses at the whole-body level?

Accepted Answer

A)  increase in the secretion of erythropoietin in certain cells 
B)  increase in heart rate 
C)  decreasing the diffusion distance at the lungs 
D)  increase in formation of HIF-1 
A)  increase in the secretion of erythropoietin in certain cells 
B)  increase in heart rate 
C)  decreasing the diffusion distance at the lungs 
D)  increase in formation of HIF-1

Question 2

Which statement about air-breathing fish is false?

Accepted Answer

A)  In most air-breathing fish, some part or branch of the alimentary canal has become specialized as an air-breathing organ. 
B)  Most air-breathing fish have lost gill function. 
C)  Air-breathing fish typically void most of their CO2 into the water. 
D)  Many air-breathing fish are able to shunt blood. 
A)  In most air-breathing fish, some part or branch of the alimentary canal has become specialized as an air-breathing organ. 
B)  Most air-breathing fish have lost gill function. 
C)  Air-breathing fish typically void most of their CO2 into the water. 
D)  Many air-breathing fish are able to shunt blood.

Question 3

Pulmonary surfactant

Accepted Answer

A)  keeps the alveoli from collapsing by reducing the surface tension. 
B)  inflates the alveoli by increasing the surface tension. 
C)  keeps the alveoli from collapsing by increasing the surface tension. 
D)  increases the rate of gas exchange across the alveoli by the secretion of phospholipids. 
A)  keeps the alveoli from collapsing by reducing the surface tension. 
B)  inflates the alveoli by increasing the surface tension. 
C)  keeps the alveoli from collapsing by increasing the surface tension. 
D)  increases the rate of gas exchange across the alveoli by the secretion of phospholipids.

Question 4

The rate at which new air is brought into the alveoli and other respiratory pathways is called the

Accepted Answer

A)  alveolar minute volume. 
B)  respiratory minute volume. 
C)  tidal volume. 
D)  ventilation rate. 
A)  alveolar minute volume. 
B)  respiratory minute volume. 
C)  tidal volume. 
D)  ventilation rate.

Question 5

Which circumstance would increase ventilation frequency in humans?

Accepted Answer

A)  A reduction in arterial blood CO2 partial pressure by 15 mm Hg 
B)  A rise in venous blood CO2 partial pressure by 15 mm Hg 
C)  A reduction in arterial blood O2 partial pressure by 15 mm Hg 
D)  A rise in venous blood O2 partial pressure by 15 mm Hg 
A)  A reduction in arterial blood CO2 partial pressure by 15 mm Hg 
B)  A rise in venous blood CO2 partial pressure by 15 mm Hg 
C)  A reduction in arterial blood O2 partial pressure by 15 mm Hg 
D)  A rise in venous blood O2 partial pressure by 15 mm Hg

Question 6

How do both CO2 and H+ stimulate ventilation in mammals?

Accepted Answer

When the concentration of CO₂ rises, the

Question 7

Branchial papulae are essentially gill processes in which major animal group?

Accepted Answer

A)  Annelids 
B)  Horseshoe crabs 
C)  Aquatic snails 
D)  Sea stars 
A)  Annelids 
B)  Horseshoe crabs 
C)  Aquatic snails 
D)  Sea stars

Question 8

During metamorphosis, a frog utilizes which gas-exchange organs?

Accepted Answer

A)  Gills only 
B)  Lungs only 
C)  Gills and lungs 
D)  Gills, skin, and lungs 
A)  Gills only 
B)  Lungs only 
C)  Gills and lungs 
D)  Gills, skin, and lungs

Question 9

Refer to the figure shown.
  Which area indicates free HIF-1?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
A)  I 
B)  II 
C)  III 
D)  IV

Question 10

CO2 is more easily transferred into water across respiratory membranes compared to O2 because CO2

Accepted Answer

A)  is more soluble in water. 
B)  moves faster. 
C)  is a smaller molecule. 
D)  has a higher cohesive force. 
A)  is more soluble in water. 
B)  moves faster. 
C)  is a smaller molecule. 
D)  has a higher cohesive force.

Walking around at an altitude of 5000 m, you could expect which of the following responses at the whole-body level?

Which statement about air-breathing fish is false?

Pulmonary surfactant

The rate at which new air is brought into the alveoli and other respiratory pathways is called the

Which circumstance would increase ventilation frequency in humans?

How do both CO₂ and H⁺ stimulate ventilation in mammals?

Branchial papulae are essentially gill processes in which major animal group?

During metamorphosis, a frog utilizes which gas-exchange organs?

Refer to the figure shown. Which area indicates free HIF-1?

CO₂ is more easily transferred into water across respiratory membranes compared to O₂ because CO₂

Animals and Environments: Function on the Ecological Stage

Molecules and Cells in Animal Physiology

Genomics, Proteomics, and Related Approaches to Physiology

Physiological Development and Epigenetics

Transport of Solutes and Water

Nutrition, Feeding, and Digestion

Energy Metabolism

Aerobic and Anaerobic Forms of Metabolism

The Energetics of Aerobic Activity

Thermal Relations

Food, Energy, and Temperature at Work: The Lives of Mammals in Frigid Places

Neurons

Synapses

Sensory Processes

Nervous System Organization and Biological Clocks

Endocrine and Neuroendocrine Physiology

Reproduction

Integrating Systems at Work: Animal Navigation

Control of Movement

Muscle

Movement and Muscle at Work: Plasticity in Response to Use and Disuse

Introduction to Oxygen and Carbon Dioxide in Physiology

Transport of Oxygen and Carbon Dioxide in Body Fluids With an Introduction to Acid- Base Physiology

Circulation

Oxygen, Carbon Dioxide, and Internal Transport at Work: Diving by Marine Mammals

Water and Salt Physiology: Introduction and Mechanisms

Kidneys and Excretion With Notes on Nitrogen Excretion

Water, Salts, and Excretion at Work: Mammals of Deserts and Dry Savannas

Water and Salt Physiology of Animals in Their Environments

Filters

Exam 23: External Respiration: the Physiology of Breathing

Walking around at an altitude of 5000 m, you could expect which of the following responses at the whole-body level?

Which statement about air-breathing fish is false?

Pulmonary surfactant

The rate at which new air is brought into the alveoli and other respiratory pathways is called the

Which circumstance would increase ventilation frequency in humans?

How do both CO2 and H+ stimulate ventilation in mammals?

Branchial papulae are essentially gill processes in which major animal group?

During metamorphosis, a frog utilizes which gas-exchange organs?

Refer to the figure shown. Which area indicates free HIF-1?

CO2 is more easily transferred into water across respiratory membranes compared to O2 because CO2

Animals and Environments: Function on the Ecological Stage

Molecules and Cells in Animal Physiology

Genomics, Proteomics, and Related Approaches to Physiology

Physiological Development and Epigenetics

Transport of Solutes and Water

Nutrition, Feeding, and Digestion

Energy Metabolism

Aerobic and Anaerobic Forms of Metabolism

The Energetics of Aerobic Activity

Thermal Relations

Food, Energy, and Temperature at Work: The Lives of Mammals in Frigid Places

Neurons

Synapses

Sensory Processes

Nervous System Organization and Biological Clocks

Endocrine and Neuroendocrine Physiology

Reproduction

Integrating Systems at Work: Animal Navigation

Control of Movement

Muscle

Movement and Muscle at Work: Plasticity in Response to Use and Disuse

Introduction to Oxygen and Carbon Dioxide in Physiology

Transport of Oxygen and Carbon Dioxide in Body Fluids With an Introduction to Acid- Base Physiology

Circulation

Oxygen, Carbon Dioxide, and Internal Transport at Work: Diving by Marine Mammals

Water and Salt Physiology: Introduction and Mechanisms

Kidneys and Excretion With Notes on Nitrogen Excretion

Water, Salts, and Excretion at Work: Mammals of Deserts and Dry Savannas

Water and Salt Physiology of Animals in Their Environments

Filters

How do both CO₂ and H⁺ stimulate ventilation in mammals?

CO₂ is more easily transferred into water across respiratory membranes compared to O₂ because CO₂