Question 1

Oxygen is transported in blood most efficiently

Accepted Answer

A)  by being dissolved in the plasma.
B)  by chemical conversion to water.
C)  by combining with hemoglobin.
D)  by combining with carbon dioxide to form bicarbonate ions.
E)  as a free oxygen ion or radical.F) B) and E)
G) B) and D) C

Question 2

Infection of the primary and secondary bronchi is

Accepted Answer

A)  acute bronchitis.
B)  pneumonia.
C)  pulmonary tuberculosis.
D)  emphysema.E) C) and D)
F) A) and D)

Question 3

As food is swallowed it is prevented from coming into contact with air and entering the trachea by the

Accepted Answer

A)  pharynx.
B)  larynx.
C)  bronchioles.
D)  saliva.
E)  epiglottis.F) A) and B)
G) None of the above

Question 4

Which statement is NOT true about the human respiratory system?

Accepted Answer

A)  The glottis is closed by the forward movement of the soft palate during swallowing.
B)  The glottis is the passageway through the larynx by which air enters the trachea.
C)  Food and air both enter the pharynx,presenting a potential danger to respiration.
D)  Air reaching the lungs has been warmed to body temperature by passage through the nose and upper respiratory passageways.
E)  Cilia and hairs in the nose help to filter out foreign materials in the air.F) A) and B)
G) B) and E)

Question 5

The grasshopper is a terrestrial animal that uses its ________ in respiration.

Accepted Answer

A)  parapodia
B)  tracheae
C)  body surface
D)  gills
E)  lungsF) All of the above
G) B) and E)

Question 6

Trace the path of an inhaled air molecule in a human being.

Accepted Answer

A)  nasal cavity-glottis-larynx-trachea-pharynx-bronchi-bronchioles-alveoli
B)  nasal cavity-pharynx-larynx-glottis-trachea-bronchi-bronchioles-alveoli
C)  nasal cavity-pharynx-glottis-larynx-trachea-bronchi-bronchioles-alveoli
D)  nasal cavity-pharynx-glottis-larynx-trachea-bronchioles-bronchi-alveoli
E)  nasal cavity-pharynx-glottis-trachea-larynx-bronchi-bronchioles-alveoliF) All of the above
G) C) and D)

Question 7

In order to maximize diffusion across the surfaces of a gill,oxygen-rich water flows in the opposite direction of oxygen-poor blood.This concept is called

Accepted Answer

A)  reverse expiration.
B)  pneumonectomy.
C)  countercurrent flow.
D)  partial pressure saturation.
E)  hemoglobin saturation shift.F) All of the above
G) None of the above

Question 8

Which features are required for efficient external respiration to take place?

Accepted Answer

A)  The gas exchange region must be moist,thin and have a large surface area.
B)  The gas exchange region must be dry,thin and have a large surface area.
C)  The gases being exchanged must be present in a low concentration in order for diffusion to occur.
D)  Gas exchange can only occur at a temperature lower than the body temperature of the organism.
E)  The gas exchange needs to occur in an aquatic environment in order to be efficient.F) A) and B)
G) B) and E)

Question 9

Disorders of the upper respiratory tract consist of all of the following except for

Accepted Answer

A)  a runny nose.
B)  pharyngitis.
C)  the common cold.
D)  asthma.
E)  strep throat.F) C) and D)
G) B) and D)

Question 10

Which lower respiratory tract disorder can be cured through the use of antibiotics that are effective against bacterial infections?

Accepted Answer

A)  Pneumonia
B)  Asthma
C)  Strep throat
D)  EmphysemaE) B) and D)
F) A) and D)

Question 11

There is unidirectional flow of air for greater absorption of oxygen in

Accepted Answer

A)  reptiles.
B)  amphibians.
C)  birds.
D)  mammals.E) A) and C)
F) C) and D)

Question 12

As food is swallowed it may come into contact with air in which of the following respiratory organs?

Accepted Answer

A)  bronchi
B)  trachea
C)  larynx
D)  pharynx
E)  nasal cavityF) B) and C)
G) C) and D)

Question 13

Identify the correct pairing of respiratory disorders and symptoms.

Accepted Answer

A)  Common cold - sneezing,runny nose and a mild fever.
B)  Asthma - coughing,wheezing and shortness of breath.
C)  Pneumonia - bronchi are filled with fluid and pus causing coughing and difficulty breathing.
D)  Pulmonary tuberculosis - lung cells build tissues around the invading bacterium causing the elasticity of the lungs to decrease.
E)  All of the pairings of respiratory disorders and symptoms are correct.F) A) and B)
G) B) and E)

Question 14

Which of the following events involves the exchange of gases across a cell membrane?

Accepted Answer

A)  Ventilation and external respiration
B)  Ventilation only
C)  External respiration and internal respiration
D)  Internal respiration only
E)  External respiration onlyF) B) and E)
G) A) and D)

Question 15

Which part of the respiratory system is an air tube held open by a series of C-shaped cartilaginous rings?

Accepted Answer

A)  pharynx
B)  larynx
C)  trachea
D)  bronchiolesE) All of the above
F) None of the above

Question 16

A lung infection caused by bacteria which become encapsulated in the lungs is

Accepted Answer

A)  emphysema.
B)  pneumonia.
C)  rheumatic fever.
D)  tuberculosis.
E)  pulmonary fibrosis.F) B) and C)
G) None of the above D

Question 17

The exchange of gases between the lungs and the blood occurs by

Accepted Answer

A)  diffusion.
B)  osmosis.
C)  filtration.
D)  active transport.
E)  ionic bonding.F) B) and E)
G) A) and D)

Question 18

A pressurized airplane cabin and an oxygen tent over a patient in a hospital both impact the respiration rate of a person.How do these compare?

Accepted Answer

A)  The oxygen tent and the airplane increase the air pressure to increase the PCO2.
B)  The oxygen tent and airplane cabin pressure lowers the partial pressures for normal breathing.
C)  Both use the same mechanism to force hemoglobin to increase affinity for oxygen.
D)  The oxygen tent increases concentration of O2 while the airplane maintains total air pressure without changing concentrations.E) A) and B)
F) B) and C)

Question 19

The iron in a hemoglobin molecule is actually what binds the oxygen.

Accepted Answer

A) True 
 B)False  True

Question 20

When trying to stimulate breathing,it is better to give a mixture of carbon dioxide and oxygen than only oxygen because

Accepted Answer

A)  pure oxygen causes you to breathe too rapidly.
B)  carbon dioxide and oxygen together exert a greater pressure than an equal amount of oxygen.
C)  carbon dioxide buildup in the blood stimulates the respiratory center in the brain.
D)  oxygen causes lactic acid buildup,and the change in pH prevents breathing.
E)  oxygen alone could lead to spontaneous human combustion.F) B) and D)
G) A) and D)

Exam 35: Respiratory Systems

Oxygen is transported in blood most efficiently

Correct AnswerverifiedC

Infection of the primary and secondary bronchi is

Correct AnswerverifiedShow Answer

As food is swallowed it is prevented from coming into contact with air and entering the trachea by the

Correct AnswerverifiedShow Answer

Which statement is NOT true about the human respiratory system?

Correct AnswerverifiedShow Answer

The grasshopper is a terrestrial animal that uses its ________ in respiration.

Correct AnswerverifiedShow Answer

Trace the path of an inhaled air molecule in a human being.

Correct AnswerverifiedShow Answer

In order to maximize diffusion across the surfaces of a gill,oxygen-rich water flows in the opposite direction of oxygen-poor blood.This concept is called

Correct AnswerverifiedShow Answer

Which features are required for efficient external respiration to take place?

Correct AnswerverifiedShow Answer

Disorders of the upper respiratory tract consist of all of the following except for

Correct AnswerverifiedShow Answer

Which lower respiratory tract disorder can be cured through the use of antibiotics that are effective against bacterial infections?

Correct AnswerverifiedShow Answer

There is unidirectional flow of air for greater absorption of oxygen in

Correct AnswerverifiedShow Answer

As food is swallowed it may come into contact with air in which of the following respiratory organs?

Correct AnswerverifiedShow Answer

Identify the correct pairing of respiratory disorders and symptoms.

Correct AnswerverifiedShow Answer

Which of the following events involves the exchange of gases across a cell membrane?

Correct AnswerverifiedShow Answer

Which part of the respiratory system is an air tube held open by a series of C-shaped cartilaginous rings?

Correct AnswerverifiedShow Answer

A lung infection caused by bacteria which become encapsulated in the lungs is

Correct AnswerverifiedD

The exchange of gases between the lungs and the blood occurs by

Correct AnswerverifiedShow Answer

A pressurized airplane cabin and an oxygen tent over a patient in a hospital both impact the respiration rate of a person.How do these compare?

Correct AnswerverifiedShow Answer

The iron in a hemoglobin molecule is actually what binds the oxygen.

Correct AnswerverifiedTrue

When trying to stimulate breathing,it is better to give a mixture of carbon dioxide and oxygen than only oxygen because

Correct AnswerverifiedShow Answer

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C

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D

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