Question 1

Constriction of smooth muscle in the bronchioles

Accepted Answer

A)  occurs during periods of exercise. 
B)  restricts the flow of air into the lungs. 
C)  decreases ciliary action. 
D)  increases airflow out of the lungs. 
E)  does not affect airflow. 
A)  occurs during periods of exercise. 
B)  restricts the flow of air into the lungs. 
C)  decreases ciliary action. 
D)  increases airflow out of the lungs. 
E)  does not affect airflow.

Question 2

A decrease in the surface area of the respiratory membrane will cause the diffusion rate to
A. increase.
B. decrease.
C. remain unchanged.

Accepted Answer

The answer of A decrease in the surface area of...

Question 3

Each lobe of each lung is supplied by a

Accepted Answer

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

Question 4

The ventral respiratory group

Accepted Answer

A)  is located in the pons. 
B)  stimulates the intercostal and abdominal muscles. 
C)  is part of the pontine respiratory group. 
D)  is active only in exhalation. 
E)  stimulates the diaphragm. 
A)  is located in the pons. 
B)  stimulates the intercostal and abdominal muscles. 
C)  is part of the pontine respiratory group. 
D)  is active only in exhalation. 
E)  stimulates the diaphragm.

Question 5

Which of the following will cause a decrease in the surface area of the respiratory membrane?

Accepted Answer

A)  emphysema 
B)  tuberculosis 
C)  pneumonia 
D)  All of the choices will reduce surface area of the respiratory membrane 
A)  emphysema 
B)  tuberculosis 
C)  pneumonia 
D)  All of the choices will reduce surface area of the respiratory membrane

Question 6

A molecule of air enters the nose through the external nares. Which of the following is the correct pathway to the trachea?

Accepted Answer

A)  nasal cavity, larynx, pharynx, trachea 
B)  oral cavity, nasal cavity, larynx, pharynx, trachea 
C)  nasopharynx, nasal cavity, laryngopharynx, trachea 
D)  nasal cavity, pharynx, larynx, trachea 
E)  nasal cavity, trachea, larynx, pharynx 
A)  nasal cavity, larynx, pharynx, trachea 
B)  oral cavity, nasal cavity, larynx, pharynx, trachea 
C)  nasopharynx, nasal cavity, laryngopharynx, trachea 
D)  nasal cavity, pharynx, larynx, trachea 
E)  nasal cavity, trachea, larynx, pharynx

Question 7

Mr. Jones has a blood pH of 7.00 and a temperature of 100.5$\degree$F. His oxygen-hemoglobin dissociation curve would

Accepted Answer

A)  shift to the right, causing more O2 to be released to his cells. 
B)  shift to the left, allowing less O2 to be released to his cells. 
C)  show no change, allowing the O2 concentration to remain stable. 
A)  shift to the right, causing more O2 to be released to his cells. 
B)  shift to the left, allowing less O2 to be released to his cells. 
C)  show no change, allowing the O2 concentration to remain stable.

Question 8

A person has severe damage or disease in the upper area of their right lung. Surgery is necessary. The doctor would need to remove

Accepted Answer

A)  the entire right lung. 
B)  the superior lobe of the right lung. 
C)  the apical bronchopulmonary segment of the right lung. 
D)  only the damaged area of the apical bronchopulmonary segment. 
E)  the apical, anterior, and posterior segments of the superior lobe. 
A)  the entire right lung. 
B)  the superior lobe of the right lung. 
C)  the apical bronchopulmonary segment of the right lung. 
D)  only the damaged area of the apical bronchopulmonary segment. 
E)  the apical, anterior, and posterior segments of the superior lobe.

Question 9

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 10

Which of the following is an effect of aging on the respiratory system?

Accepted Answer

A)  vital capacity is unchanged 
B)  minute ventilation rates increase 
C)  residual volume increases 
D)  gas exchange in the lungs remains unchanged 
A)  vital capacity is unchanged 
B)  minute ventilation rates increase 
C)  residual volume increases 
D)  gas exchange in the lungs remains unchanged

Question 11

The volume of air inspired or expired with each breath is the

Accepted Answer

A)  residual volume. 
B)  inspiratory reserve volume. 
C)  tidal volume. 
D)  expiratory reserve volume. 
A)  residual volume. 
B)  inspiratory reserve volume. 
C)  tidal volume. 
D)  expiratory reserve volume.

Question 12

Match the disorder of the respiratory system with the best description.
-pulmonary fibrosis

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 13

Blood oxygen levels

Accepted Answer

A)  are more important than carbon dioxide levels in the regulation of respiration. 
B)  need to change only slightly to cause a change in respiration rate. 
C)  within the normal PO2 range have little effect on regulation of respiration. 
D)  in venous blood and arterial blood are about the same. 
E)  never change enough to influence respiration. 
A)  are more important than carbon dioxide levels in the regulation of respiration. 
B)  need to change only slightly to cause a change in respiration rate. 
C)  within the normal PO2 range have little effect on regulation of respiration. 
D)  in venous blood and arterial blood are about the same. 
E)  never change enough to influence respiration.

Question 14

Contraction of respiratory muscles are responsible for the movement of air out of the lungs in quiet expiration.

Accepted Answer

A) True 
 B)False

Question 15

Gas exchange between the air in the lungs and the blood takes place in the

Accepted Answer

A)  alveoli. 
B)  primary bronchi. 
C)  terminal bronchioles. 
D)  trachea. 
E)  respiratory bronchi. 
A)  alveoli. 
B)  primary bronchi. 
C)  terminal bronchioles. 
D)  trachea. 
E)  respiratory bronchi.

Question 16

Increasing ventilation will increase the PO2 and decrease the PCO2, which promotes gas exchange.

Accepted Answer

A) True 
 B)False

Question 17

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 18

-Which of the patients above is suffering from emphysema?

Accepted Answer

The answer of  
-Which of the patients above is...

Question 19

Which of the following respiratory membrane layers is closest to air in the alveolus?

Accepted Answer

A)  alveolar epithelium 
B)  alveolar basement membrane 
C)  capillary basement membrane 
D)  capillary endothelium 
E)  alveolar fluid (with surfactant) 
A)  alveolar epithelium 
B)  alveolar basement membrane 
C)  capillary basement membrane 
D)  capillary endothelium 
E)  alveolar fluid (with surfactant)

Question 20

When the inspiratory muscles contract,

Accepted Answer

A)  thoracic volume increases. 
B)  pleural pressure increases. 
C)  the alveolar pressure increases. 
D)  expiration occurs. 
E)  thoracic volume decreases. 
A)  thoracic volume increases. 
B)  pleural pressure increases. 
C)  the alveolar pressure increases. 
D)  expiration occurs. 
E)  thoracic volume decreases.

Exam 23: Respiratory System

Constriction of smooth muscle in the bronchioles

A decrease in the surface area of the respiratory membrane will cause the diffusion rate to A. increase. B. decrease. C. remain unchanged.

Each lobe of each lung is supplied by a

The ventral respiratory group

Which of the following will cause a decrease in the surface area of the respiratory membrane?

A molecule of air enters the nose through the external nares. Which of the following is the correct pathway to the trachea?

Mr. Jones has a blood pH of 7.00 and a temperature of 100.5 °\degree° F. His oxygen-hemoglobin dissociation curve would

A person has severe damage or disease in the upper area of their right lung. Surgery is necessary. The doctor would need to remove

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

Which of the following is an effect of aging on the respiratory system?

The volume of air inspired or expired with each breath is the

Match the disorder of the respiratory system with the best description. -pulmonary fibrosis

Blood oxygen levels

Contraction of respiratory muscles are responsible for the movement of air out of the lungs in quiet expiration.

Gas exchange between the air in the lungs and the blood takes place in the

Increasing ventilation will increase the PO2 and decrease the PCO2, which promotes gas exchange.

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

-Which of the patients above is suffering from emphysema?

Which of the following respiratory membrane layers is closest to air in the alveolus?

When the inspiratory muscles contract,

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Mr. Jones has a blood pH of 7.00 and a temperature of 100.5 $\degree$ F. His oxygen-hemoglobin dissociation curve would

Increasing ventilation will increase the PO₂ and decrease the PCO₂, which promotes gas exchange.