Question 1

How would a spirometer tracing be different in a person with a collapsed lung? Why? What must occur to restore the respiratory function to normal?

Accepted Answer

Each volume would be roughly reduced by

Question 2

When alveolar pressure is equal to atmospheric pressure,air flows into the lungs.

Accepted Answer

A) True 
 B)False

Question 3

An increase in PCO2 would cause

Accepted Answer

A)  the bronchioles to dilate and the systemic arterioles to dilate. 
B)  the bronchioles to dilate and the systemic arterioles to constrict. 
C)  the bronchioles to constrict and the systemic arterioles to dilate. 
D)  the bronchioles to constrict and the systemic arterioles to constrict. 
E)  None of the answers are correct. 
A)  the bronchioles to dilate and the systemic arterioles to dilate. 
B)  the bronchioles to dilate and the systemic arterioles to constrict. 
C)  the bronchioles to constrict and the systemic arterioles to dilate. 
D)  the bronchioles to constrict and the systemic arterioles to constrict. 
E)  None of the answers are correct.

Question 4

What is Dalton's law? Why is it important?

Accepted Answer

Dalton's law states that the total air p

Question 5

The beating of the cilia of the respiratory passages in the direction of the pharynx forms a ________.

Accepted Answer

mucociliar

Question 6

Which is NOT considered to be a primary function of the respiratory system?

Accepted Answer

A)  regulation of water balance 
B)  regulation of pH balance 
C)  protection against pathogens 
D)  vocalization 
E)  gas exchange 
A)  regulation of water balance 
B)  regulation of pH balance 
C)  protection against pathogens 
D)  vocalization 
E)  gas exchange

Question 7

Flow of air

Accepted Answer

A)  is directly proportional to a pressure gradient, and flow decreases as the resistance of the system increases. 
B)  is directly proportional to the resistance, and flow decreases as the pressure of the system increases. 
C)  is directly proportional to a pressure gradient, and flow increases as the resistance of the system increases. 
D)  is directly proportional to the resistance, and flow increases as the resistance of the system increases. 
E)  None of the answers are correct. 
A)  is directly proportional to a pressure gradient, and flow decreases as the resistance of the system increases. 
B)  is directly proportional to the resistance, and flow decreases as the pressure of the system increases. 
C)  is directly proportional to a pressure gradient, and flow increases as the resistance of the system increases. 
D)  is directly proportional to the resistance, and flow increases as the resistance of the system increases. 
E)  None of the answers are correct.

Question 8

Explain how the upper airways and bronchi condition the air,and why this conditioning is important.

Accepted Answer

Air is warmed to body temperature to pro

Question 9

According to the law of LaPlace,when comparing two alveoli lined with fluid,pressure in the one with the ________ diameter will be greater.

Accepted Answer

A)  larger 
B)  smaller 
A)  larger 
B)  smaller

Question 10

Which of the following features of the alveolar sacs allows for the ease of diffusion of gasses?

Accepted Answer

A)  They are made of a single layer of simple squamous epithelium. 
B)  Type II alveolar cells secrete surfactant. 
C)  Elastin fibers allow the alveoli to stretch thin enough for diffusion to occur. 
D)  They are made of a single layer of simple squamous epithelium and elastin fibers allow the alveoli to stretch thin enough for diffusion to occur. 
A)  They are made of a single layer of simple squamous epithelium. 
B)  Type II alveolar cells secrete surfactant. 
C)  Elastin fibers allow the alveoli to stretch thin enough for diffusion to occur. 
D)  They are made of a single layer of simple squamous epithelium and elastin fibers allow the alveoli to stretch thin enough for diffusion to occur.

Question 11

What are the functions of pleural fluid?

Accepted Answer

1.It creates a moist,slippery

Question 12

The larynx contains the ________,connective tissue bands that tighten and vibrate to create sound when air moves past them.

Accepted Answer

The answer of The larynx contains the ________,connective tissue bands...

Question 13

The substance produced by the lungs to reduce surface tension is called ________.

Accepted Answer

The answer of The substance produced by the lungs to...

Question 14

You were the top student in your physiology class last semester.For this reason,your professor has asked that you prepare some lectures for her physiology class this semester.Specifically,she would like you to discuss the similarities and differences between the cardiovascular and respiratory systems,in terms of pressure gradients and fluid flow.
A.Explain how you will describe the role of the following structures: the pump and the tubes.
B.Explain how you will describe the importance of an open vs.closed system and the relevant differences between liquids and gases.
C.What is fundamentally different about the respiratory pump compared to the cardiac pump,and why does this difference exist?

Accepted Answer

A.In both systems,fluids flow down a pre

Question 15

Which single muscle contributes most to normal,resting inspiration? Which single muscle contributes most to normal,resting expiration?

Accepted Answer

The diaphragm muscle provides

Question 16

A package insert for a medication states that "this medicine is a beta receptor stimulant used to treat symptoms of asthma,emphysema and other breathing conditions.Possible side effects include fast heart rate,nervousness,tremors or nausea." Why would these symptoms be expected?

Accepted Answer

Stimulation of beta receptors

Question 17

The lungs are located in the ________ cavity.

Accepted Answer

A)  pericardial 
B)  pulmonary 
C)  pleural 
D)  thoracic 
E)  costal 
A)  pericardial 
B)  pulmonary 
C)  pleural 
D)  thoracic 
E)  costal

Question 18

The volume of air that can be forcefully inhaled on top of a normal inspiration is called the ________.

Accepted Answer

inspirator

Question 19

Air entering the body is filtered,warmed,and humidified by the

Accepted Answer

A)  upper respiratory tract. 
B)  lower respiratory tract. 
C)  lungs. 
D)  alveoli. 
E)  All of the answers are correct. 
A)  upper respiratory tract. 
B)  lower respiratory tract. 
C)  lungs. 
D)  alveoli. 
E)  All of the answers are correct.

Question 20

Match the type of breathing with its description.
-cessation of breathing

Accepted Answer

A) hyperpnea 
B) hyperventilation 
C) tachypnea 
D) dyspnea 
E) apnea 
A) hyperpnea 
B) hyperventilation 
C) tachypnea 
D) dyspnea 
E) apnea

Exam 17: Mechanics of Breathing

How would a spirometer tracing be different in a person with a collapsed lung? Why? What must occur to restore the respiratory function to normal?

When alveolar pressure is equal to atmospheric pressure,air flows into the lungs.

An increase in PCO2 would cause

What is Dalton's law? Why is it important?

The beating of the cilia of the respiratory passages in the direction of the pharynx forms a ________.

Which is NOT considered to be a primary function of the respiratory system?

Flow of air

Explain how the upper airways and bronchi condition the air,and why this conditioning is important.

According to the law of LaPlace,when comparing two alveoli lined with fluid,pressure in the one with the ________ diameter will be greater.

Which of the following features of the alveolar sacs allows for the ease of diffusion of gasses?

What are the functions of pleural fluid?

The larynx contains the ________,connective tissue bands that tighten and vibrate to create sound when air moves past them.

The substance produced by the lungs to reduce surface tension is called ________.

Which single muscle contributes most to normal,resting inspiration? Which single muscle contributes most to normal,resting expiration?

A package insert for a medication states that "this medicine is a beta receptor stimulant used to treat symptoms of asthma,emphysema and other breathing conditions.Possible side effects include fast heart rate,nervousness,tremors or nausea." Why would these symptoms be expected?

The lungs are located in the ________ cavity.

The volume of air that can be forcefully inhaled on top of a normal inspiration is called the ________.

Air entering the body is filtered,warmed,and humidified by the

Match the type of breathing with its description. -cessation of breathing

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

Gas Exchange and Transport

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

An increase in P_CO₂ would cause