Question 1

Ventilation refers to the

Accepted Answer

A) movement of air into and out of the lungs. 
B) gas exchange between the blood and the tissues. 
C) transportation of oxygen and carbon dioxide in the blood. 
D) gas exchange between the air in the lungs and the blood. 
E) respiration at the cellular level. 
A) movement of air into and out of the lungs. 
B) gas exchange between the blood and the tissues. 
C) transportation of oxygen and carbon dioxide in the blood. 
D) gas exchange between the air in the lungs and the blood. 
E) respiration at the cellular level.

Question 2

Which of the following results in an increase in shunted blood (blood not completely oxygenated)?

Accepted Answer

A) exercise 
B) pulmonary edema 
C) increased heart rate 
D) increased respiration rate 
E) None of these choices is correct. 
A) exercise 
B) pulmonary edema 
C) increased heart rate 
D) increased respiration rate 
E) None of these choices is correct.

Question 3

Of the following structures,the largest in diameter is the

Accepted Answer

A) primary bronchus. 
B) secondary bronchus. 
C) respiratory bronchiole. 
D) trachea. 
E) tertiary bronchus. 
A) primary bronchus. 
B) secondary bronchus. 
C) respiratory bronchiole. 
D) trachea. 
E) tertiary bronchus.

Question 4

Whenever people cry,their nose runs.This is because the _____ drain tears into the nose.

Accepted Answer

A) nasolacrimal ducts 
B) paranasal sinuses 
C) lacrimal glands 
D) Wharten's ducts 
E) auditory tube 
A) nasolacrimal ducts 
B) paranasal sinuses 
C) lacrimal glands 
D) Wharten's ducts 
E) auditory tube

Question 5

Which of the following statements concerning the larynx is correct?

Accepted Answer

A) The larynx contains four unpaired cartilages. 
B) When the glottis closes,air is prevented from leaving the lungs. 
C) Unlike other portions of the larynx,the epiglottis consists of some bony tissue. 
D) The inferior laryngeal cartilage is the thyroid cartilage. 
E) The epiglottis is also called "Adam's apple". 
A) The larynx contains four unpaired cartilages. 
B) When the glottis closes,air is prevented from leaving the lungs. 
C) Unlike other portions of the larynx,the epiglottis consists of some bony tissue. 
D) The inferior laryngeal cartilage is the thyroid cartilage. 
E) The epiglottis is also called "Adam's apple".

Question 6

Match the disorder of the respiratory system with the best description.
-emphysema

Accepted Answer

A) destruction of the alveolar walls 
B) inflammation of the bronchii 
C) inherited disease that affects secretory cells lining the lungs 
D) replacement of lung tissue with fibrous connective tissue 
E) infant stops breathing during sleep 
A) destruction of the alveolar walls 
B) inflammation of the bronchii 
C) inherited disease that affects secretory cells lining the lungs 
D) replacement of lung tissue with fibrous connective tissue 
E) infant stops breathing during sleep

Question 7

The pontine respiratory neurons

Accepted Answer

A) are located in the medulla oblongata in the brain. 
B) are active only during inspiration. 
C) are active only during expiration. 
D) play a role in switching between inspiration and expiration. 
E) is essential for respiratory rhythm. 
A) are located in the medulla oblongata in the brain. 
B) are active only during inspiration. 
C) are active only during expiration. 
D) play a role in switching between inspiration and expiration. 
E) is essential for respiratory rhythm.

Question 8

The serous membranes that surround the lungs are called the

Accepted Answer

A) mucous membranes. 
B) synovial membranes. 
C) pleural membranes. 
D) peritoneal membranes. 
E) pulmonary membranes. 
A) mucous membranes. 
B) synovial membranes. 
C) pleural membranes. 
D) peritoneal membranes. 
E) pulmonary membranes.

Question 9

Which of the following increases the rate of gas exchange across the respiratory membrane?

Accepted Answer

A) increased fluid in the alveoli 
B) increased thickness of the respiratory membrane 
C) increased surface area of the respiratory membrane 
D) increased connective tissue in the alveolar wall 
E) decreased surface area of the respiratory membrane 
A) increased fluid in the alveoli 
B) increased thickness of the respiratory membrane 
C) increased surface area of the respiratory membrane 
D) increased connective tissue in the alveolar wall 
E) decreased surface area of the respiratory membrane

Question 10

Mr.Huff and Puff is getting ready to blow up a pool float because he can't find the air pump.He takes a big breath in after exhaling normally.The air he takes in is the

Accepted Answer

A) inspiratory reserve volume. 
B) vital capacity. 
C) inspiratory capacity. 
D) tidal volume. 
A) inspiratory reserve volume. 
B) vital capacity. 
C) inspiratory capacity. 
D) tidal volume.

Question 11

A patient has severe pneumonia,which has thickened the respiratory membrane.Despite oxygen therapy,he still has rapid respiration and feels as if he is not getting enough air.This is because

Accepted Answer

A) the oxygen increases the stimulation of the carotid and aortic bodies. 
B) the oxygen stimulates the respiratory center to increase the respiratory rate. 
C) his blood pH increased and stimulated an increase in his respiratory rate. 
D) even though he is receiving enough oxygen,carbon dioxide and hydrogen ions accumulate in his blood and cause the respiratory rate to continue to increase. 
E) oxygen cannot diffuse across the thickened membrane. 
A) the oxygen increases the stimulation of the carotid and aortic bodies. 
B) the oxygen stimulates the respiratory center to increase the respiratory rate. 
C) his blood pH increased and stimulated an increase in his respiratory rate. 
D) even though he is receiving enough oxygen,carbon dioxide and hydrogen ions accumulate in his blood and cause the respiratory rate to continue to increase. 
E) oxygen cannot diffuse across the thickened membrane.

Question 12

What type of cells make up about 90% of the alveolar surface?

Accepted Answer

A) ciliated simple squamous epithelial cells 
B) Type I pneumocytes 
C) Type II pneumocytes 
D) macrophages 
A) ciliated simple squamous epithelial cells 
B) Type I pneumocytes 
C) Type II pneumocytes 
D) macrophages

Question 13

During exercise,the oxygen-hemoglobin dissociation curve

Accepted Answer

A) shifts to the right. 
B) shifts to the left. 
C) doesn't shift. 
A) shifts to the right. 
B) shifts to the left. 
C) doesn't shift.

Question 14

Hemoglobin that has released its oxygen

Accepted Answer

A) loses its affinity for oxygen. 
B) will dissolve in the plasma. 
C) will bind more readily to carbon dioxide. 
D) is broken down to heme and globin and excreted. 
E) will bind more readily to oxygen. 
A) loses its affinity for oxygen. 
B) will dissolve in the plasma. 
C) will bind more readily to carbon dioxide. 
D) is broken down to heme and globin and excreted. 
E) will bind more readily to oxygen.

Question 15

Which of the following is NOT part of the respiratory membrane?

Accepted Answer

A) simple squamous epithelium of the alveolus and its basement membrane 
B) interstitial space 
C) pulmonary capillary simple squamous epithelium and its basement membrane 
D) thick layer of mucus lining the alveolus 
A) simple squamous epithelium of the alveolus and its basement membrane 
B) interstitial space 
C) pulmonary capillary simple squamous epithelium and its basement membrane 
D) thick layer of mucus lining the alveolus

Question 16

Which of the following statements is true?

Accepted Answer

A) As thoracic volume increases,alveolar pressure (Palv)increases. 
B) In expiration,the thoracic volume increases. 
C) Constriction of bronchioles assists breathing. 
D) As alveolar volume increases,alveolar pressure (Palv)decreases. 
E) Pressure is directly proportional to volume. 
A) As thoracic volume increases,alveolar pressure (Palv)increases. 
B) In expiration,the thoracic volume increases. 
C) Constriction of bronchioles assists breathing. 
D) As alveolar volume increases,alveolar pressure (Palv)decreases. 
E) Pressure is directly proportional to volume.

Question 17

The largest of the laryngeal cartilages is the

Accepted Answer

A) epiglottis. 
B) thyroid cartilage. 
C) cricoid cartilage. 
D) corniculate cartilage. 
E) cuneiform cartilage. 
A) epiglottis. 
B) thyroid cartilage. 
C) cricoid cartilage. 
D) corniculate cartilage. 
E) cuneiform cartilage.

Question 18

During inspiration,contraction of the diaphragm causes the volume of Mr.Jones' thoracic cavity to increase and the pleural pressure to decrease.The pressure in his alveoli (Palv)will

Accepted Answer

A) decrease below atmospheric pressure (P
B) ,causing air to move out of his lungs. 
B) become greater than atmospheric pressure (P
B) ,causing air to move into his lungs. 
C) decrease below atmospheric pressure (P
B) ,causing air to move into his lungs. 
D) become greater than atmospheric pressure (P
B) ,causing air to move out of his lungs. 
E) does not change. 
A) decrease below atmospheric pressure (P
B) ,causing air to move out of his lungs. 
B) become greater than atmospheric pressure (P
B) ,causing air to move into his lungs. 
C) decrease below atmospheric pressure (P
B) ,causing air to move into his lungs. 
D) become greater than atmospheric pressure (P
B) ,causing air to move out of his lungs. 
E) does not change.

Question 19

If there is an accumulation of acidic products in the plasma,one would expect

Accepted Answer

A) an increase in respiration rate. 
B) a decrease in respiration rate. 
C) no influence on respiration rate. 
D) an increase in residual volume. 
E) apnea. 
A) an increase in respiration rate. 
B) a decrease in respiration rate. 
C) no influence on respiration rate. 
D) an increase in residual volume. 
E) apnea.

Question 20

Mr.Smith hypoventilates and retains too much carbon dioxide.Which of the following receptors is stimulated by an increase in carbon dioxide?

Accepted Answer

A) irritant receptors 
B) pressure receptors 
C) osmoreceptors 
D) peripheral chemoreceptors 
E) baroreceptors 
A) irritant receptors 
B) pressure receptors 
C) osmoreceptors 
D) peripheral chemoreceptors 
E) baroreceptors

Exam 23: Respiratory System

Ventilation refers to the

Which of the following results in an increase in shunted blood (blood not completely oxygenated)?

Of the following structures,the largest in diameter is the

Whenever people cry,their nose runs.This is because the _____ drain tears into the nose.

Which of the following statements concerning the larynx is correct?

Match the disorder of the respiratory system with the best description. -emphysema

The pontine respiratory neurons

The serous membranes that surround the lungs are called the

Which of the following increases the rate of gas exchange across the respiratory membrane?

Mr.Huff and Puff is getting ready to blow up a pool float because he can't find the air pump.He takes a big breath in after exhaling normally.The air he takes in is the

A patient has severe pneumonia,which has thickened the respiratory membrane.Despite oxygen therapy,he still has rapid respiration and feels as if he is not getting enough air.This is because

What type of cells make up about 90% of the alveolar surface?

During exercise,the oxygen-hemoglobin dissociation curve

Hemoglobin that has released its oxygen

Which of the following is NOT part of the respiratory membrane?

Which of the following statements is true?

The largest of the laryngeal cartilages is the

During inspiration,contraction of the diaphragm causes the volume of Mr.Jones' thoracic cavity to increase and the pleural pressure to decrease.The pressure in his alveoli (Palv)will

If there is an accumulation of acidic products in the plasma,one would expect

Mr.Smith hypoventilates and retains too much carbon dioxide.Which of the following receptors is stimulated by an increase in carbon dioxide?

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

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Nutrition,metabolism,and Temperature Regulation

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Water,electrolyte,and Acid-Based Balance

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During inspiration,contraction of the diaphragm causes the volume of Mr.Jones' thoracic cavity to increase and the pleural pressure to decrease.The pressure in his alveoli (P_alv)will