Question 1

Which of these age-based changes is false?

Accepted Answer

A)  The lungs lose elastic tissue.
B)  The lung's compliance changes.
C)  Vital capacity increases.
D)  Respiratory muscles weaken.
E)  Costal cartilages become more flexible.

Question 2

Which of the following can be calculated if the tidal volume and respiratory rate are known?

Accepted Answer

A)  minute volume
B)  inspiratory reserve volume
C)  expiratory reserve volume
D)  anatomical dead space
E)  forced vital capacity

Question 3

The apneustic centers of the pons

Accepted Answer

A)  inhibit the pneumotaxic and inspiratory centers.
B)  provide stimulation to the inspiratory center.
C)  monitor blood gas levels.
D)  alter chemoreceptor sensitivity.
E)  generate the gasp reflex.

Question 4

The percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade is

Accepted Answer

A)  greater than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade.
B)  less than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade.
C)  equal to the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade.

Question 5

The partial pressure of oxygen in arterial blood is approximately

Accepted Answer

A)  40 mm Hg.
B)  45 mm Hg.
C)  50 mm Hg.
D)  70 mm Hg.
E)  100 mm Hg.

Question 6

A SCUBA diver has been deep underwater and suddenly rises to the surface too fast. Why does the diver get decompression sickness?

Accepted Answer

A)  Pressure decreases and carbon dioxide rushes into cells.
B)  Pressure changes too fast and the carbon dioxide in the blood forms bubbles.
C)  Pressure decreases too fast and nitrogen gas in the blood forms bubbles.
D)  The gas in the SCUBA tank had too much pressure and rapid ascent forces too much air into the blood.
E)  Pressure increases too fast and too much oxygen enters the blood and forms bubbles.

Question 7

The partial pressure of carbon dioxide is greatest in

Accepted Answer

A)  venous blood.
B)  alveolar air.
C)  expired air.
D)  inspired air.
E)  arterial blood.

Question 8

The number of lobes in the right lung is

Accepted Answer

A)  greater than the number of lobes in the left lung.
B)  less than the number of lobes in the left lung.
C)  equal to the number of lobes in the left lung.

Question 9

The laryngeal cartilage not composed of hyaline cartilage is the

Accepted Answer

A)  arytenoid.
B)  corniculate.
C)  cricoid.
D)  epiglottis.
E)  thyroid.

Question 10

If the volume of the lungs increases,what happens to the air pressure inside the lungs?

Accepted Answer

A)  decreases
B)  increases and possibly damages the lungs
C)  increases twice the amount of the increase in volume
D)  remains constant
E)  increases

Question 11

The adult human trachea is about ________ in diameter and contains ________ tracheal cartilages.

Accepted Answer

A)  1) 0 cm; 15-20
B)  1) 0 cm; 10-15
C)  2) 5 cm; 15-20
D)  2) 5 cm; 40-50
E)  4) 5 cm; 60-80

Question 12

Higher brain centers that alter the activity of the respiratory centers include all of the following,except

Accepted Answer

A)  cortical association areas.
B)  the precentral motor gyrus.
C)  the limbic system.
D)  the hypothalamus.
E)  Broca's center.

Question 13

The glottis is

Accepted Answer

A)  the soft tissue that hangs off the end of the soft palate.
B)  a flap of elastic cartilage.
C)  the opening to the larynx.
D)  the opening to the pharynx.
E)  part of the hard palate.

Exam 23: The Respiratory System

Which of these age-based changes is false?

Correct Answer
verified

A SCUBA diver has been deep underwater and suddenly rises to the surface too fast. Why does the diver get decompression sickness?

Correct Answer
verified

The percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade is

Correct Answer
verified

Higher brain centers that alter the activity of the respiratory centers include all of the following,except

Correct Answer
verified

The adult human trachea is about in diameter and contains tracheal cartilages.

Correct Answer
verified

The laryngeal cartilage not composed of hyaline cartilage is the

Correct Answer
verified

The number of lobes in the right lung is

Correct Answer
verified

Which of the following can be calculated if the tidal volume and respiratory rate are known?

Correct Answer
verified

The partial pressure of oxygen in arterial blood is approximately

Correct Answer
verified

The apneustic centers of the pons

Correct Answer
verified

The partial pressure of carbon dioxide is greatest in

Correct Answer
verified

The glottis is

Correct Answer
verified

If the volume of the lungs increases,what happens to the air pressure inside the lungs?

Correct Answer
verified

Exam 23: The Respiratory System

Which of these age-based changes is false?

Correct AnswerverifiedShow Answer

A SCUBA diver has been deep underwater and suddenly rises to the surface too fast. Why does the diver get decompression sickness?

Correct AnswerverifiedShow Answer

The percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade is

Correct AnswerverifiedShow Answer

Higher brain centers that alter the activity of the respiratory centers include all of the following,except

Correct AnswerverifiedShow Answer

The adult human trachea is about ________ in diameter and contains ________ tracheal cartilages.

Correct AnswerverifiedShow Answer

The laryngeal cartilage not composed of hyaline cartilage is the

Correct AnswerverifiedShow Answer

The number of lobes in the right lung is

Correct AnswerverifiedShow Answer

Which of the following can be calculated if the tidal volume and respiratory rate are known?

Correct AnswerverifiedShow Answer

The partial pressure of oxygen in arterial blood is approximately

Correct AnswerverifiedShow Answer

The apneustic centers of the pons

Correct AnswerverifiedShow Answer

The partial pressure of carbon dioxide is greatest in

Correct AnswerverifiedShow Answer

The glottis is

Correct AnswerverifiedShow Answer

If the volume of the lungs increases,what happens to the air pressure inside the lungs?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The adult human trachea is about in diameter and contains tracheal cartilages.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified