Question 1

Vital capacity is reduced in pulmonary restrictive disorders.

Accepted Answer

A) True 
 B)False

Question 2

The partial pressure of oxygen decreases at high altitude because the amount of oxygen in the air is decreased.

Accepted Answer

A) True 
 B)False

Question 3

Decompression sickness is caused by ascending to sea level too quickly which results in bubbles of _____ to form in the blood.

Accepted Answer

A)  oxygen
B)  carbon dioxide
C)  carbon monoxide
D)  nitrogen

Question 4

An atopic allergic asthmatic would have

Accepted Answer

A)  activation of helper T lynphocytes.
B)  production of IgE.
C)  pulmonary eosinphilia.
D)  All of the choices are correct.

Question 5

Decompression sickness could occur if an airplane's cabin depressurized at a high altitude.

Accepted Answer

A) True 
 B)False

Question 6

A decreased affinity for oxygen shifts the oxygen dissociation curve to the right.

Accepted Answer

A) True 
 B)False

Question 7

Peripheral chemoreceptors that can detect changes in blood pH are located in the

Accepted Answer

A)  medulla oblongatA.
B)  aortic and carotid bodies.
C)  pons.
D)  lungs.

Question 8

Fluid secretion by lung cells is due to _______ alveolar cells.

Accepted Answer

A)  active transport of Na+ into
B)  active transport of Cl- out of
C)  passive transport of HCO3- out of
D)  active transport of Na+ out of

Question 9

The anatomical dead space

Accepted Answer

A)  is increased by emphysemA.
B)  has a lower concentration of carbon dioxide than atmospheric air.
C)  has a lower concentration of oxygen than atmospheric air.
D)  is comprised of the respiratory zone.

Question 10

Respiratory acidosis would be compensated by increased retention of bicarbonate ions in the kidneys.

Accepted Answer

A) True 
 B)False

Question 11

Breathing 100% oxygen will

Accepted Answer

A)  significantly increase the oxygen delivery to tissues.
B)  increase the amount of oxygen in red blood cells.
C)  significantly increase the total oxygen content of whole blood.
D)  not change the amount of oxygen dissolved in the plasma.

Question 12

Quiet expiration is caused by

Accepted Answer

A)  contraction of the external intercostals.
B)  contraction of the internal intercostals.
C)  lung recoil and increased intrapulmonary pressure.
D)  contraction of the scalenes.

Question 13

Which of the following is NOT a component of respiration?

Accepted Answer

A)  gas exchange
B)  oxygen utilization
C)  speech
D)  ventilation

Question 14

The ventilation/perfusion ratio is ________ at the apex of the lungs.

Accepted Answer

A)  highest
B)  lowest
C)  the same as the base

Question 15

Normal alveolar PO2 is

Accepted Answer

A)  40 mm Hg.
B)  46 mm Hg.
C)  100 mm Hg.
D)  105 mm Hg.

Question 16

An oxygen electrode will measure the amount of free oxygen in the plasma and the amount of oxygen bonded to hemoglobin.

Accepted Answer

A) True 
 B)False

Question 17

Who's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas in the mixture would exert independently?

Accepted Answer

A)  Boyle's Law
B)  Charles Law
C)  Dalton's Law
D)  Henry's Law

Question 18

Which of the following is true?

Accepted Answer

A)  Blood in the pulmonary veins is low in oxygen.
B)  Blood in the pulmonary veins is high in carbon dioxide.
C)  The oxygen concentration of inspired air is higher than that of alveolar air.
D)  All of the choices are true.

Question 19

The form of hemoglobin with iron in a reduced state and bonded to carbon monoxide is

Accepted Answer

A)  oxyhemoglobin.
B)  deoxyhemoglobin.
C)  methemoglobin.
D)  carboxyhemoglobin.

Question 20

Quiet expiration will increase intrapulmonary pressure to about +3 mm Hg above atmospheric pressure.

Accepted Answer

A) True 
 B)False

Exam 16: Respiratory Physiology

Who's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas in the mixture would exert independently?

Correct AnswerverifiedShow Answer

The anatomical dead space

Correct AnswerverifiedShow Answer

The ventilation/perfusion ratio is ________ at the apex of the lungs.

Correct AnswerverifiedShow Answer

Quiet expiration is caused by

Correct AnswerverifiedShow Answer

An atopic allergic asthmatic would have

Correct AnswerverifiedShow Answer

Breathing 100% oxygen will

Correct AnswerverifiedShow Answer

Vital capacity is reduced in pulmonary restrictive disorders.

Correct AnswerverifiedShow Answer

Quiet expiration will increase intrapulmonary pressure to about +3 mm Hg above atmospheric pressure.

Correct AnswerverifiedShow Answer

Peripheral chemoreceptors that can detect changes in blood pH are located in the

Correct AnswerverifiedShow Answer

A decreased affinity for oxygen shifts the oxygen dissociation curve to the right.

Correct AnswerverifiedShow Answer

The partial pressure of oxygen decreases at high altitude because the amount of oxygen in the air is decreased.

Correct AnswerverifiedShow Answer

Which of the following is NOT a component of respiration?

Correct AnswerverifiedShow Answer

Fluid secretion by lung cells is due to _______ alveolar cells.

Correct AnswerverifiedShow Answer

The form of hemoglobin with iron in a reduced state and bonded to carbon monoxide is

Correct AnswerverifiedShow Answer

Normal alveolar PO2 is

Correct AnswerverifiedShow Answer

Decompression sickness is caused by ascending to sea level too quickly which results in bubbles of _____ to form in the blood.

Correct AnswerverifiedShow Answer

Which of the following is true?

Correct AnswerverifiedShow Answer

Decompression sickness could occur if an airplane's cabin depressurized at a high altitude.

Correct AnswerverifiedShow Answer

Respiratory acidosis would be compensated by increased retention of bicarbonate ions in the kidneys.

Correct AnswerverifiedShow Answer

An oxygen electrode will measure the amount of free oxygen in the plasma and the amount of oxygen bonded to hemoglobin.

Correct AnswerverifiedShow Answer

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Normal alveolar P_O2 is

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