Question 1

During exhalation,the diaphragm ________.

Accepted Answer

A)  contracts
B)  relaxesC) A) and B)
D) undefined

Question 2

A second oxygen reserve is found in muscle cells using the oxygen-binding protein _______________.

Accepted Answer

A)  myoglobin
B)  hemocyanin
C)  oxyhemoglobin
D)  deoxyhemoglobinE) All of the above
F) None of the above

Question 3

Which of these dissolved gases cannot be transported by hemoglobin?

Accepted Answer

A)  nitric acid (NO) 
B)  oxygen (O2) 
C)  carbon dioxide (CO2) 
D)  carbon monoxide (CO) 
E)  nitrogen (N2) F) B) and E)
G) C) and E)

Question 4

Air enters human lungs from the mouth through the _________.

Accepted Answer

A)  trachea
B)  nasal cavities
C)  spiracles
D)  posterior air sacs
E)  esophagusF) B) and E)
G) B) and D)

Question 5

At rest,each breath moves a volume of air into and out of the lungs and this is called the _______ volume.

Accepted Answer

A)  tidal
B)  lamellar
C)  capacitive
D)  aerobicE) A) and B)
F) None of the above

Question 6

During an asthma attack,allergens trigger the release of ________ that cause severe constriction of the bronchi.

Accepted Answer

A)  histamines
B)  steroids
C)  antibodies
D)  adrenalinE) A) and C)
F) B) and D)

Question 7

All other terrestrial vertebrates except amphibians breathe by expanding their lungs and thereby creating a

Accepted Answer

A)  negative pressure within the lungs.
B)  positive pressure within the lungs.
C)  neutral pressure within the lungs.
D)  countercurrent pressure within the lungs.
E)  directional pressure within the lungs.F) B) and C)
G) D) and E)

Question 8

The many lamellae in the gills of fish improve respiratory efficiency by _______.

Accepted Answer

A)  decreasing the distance for diffusion
B)  increasing the surface area for diffusion
C)  increasing the concentration difference
D)  changing the diffusion constantE) C) and D)
F) A) and B)

Question 9

When a frog breaths,air enters first through its __________.

Accepted Answer

A)  buccal cavity
B)  lungs
C)  nostrils
D)  mouthE) None of the above
F) B) and C)

Question 10

In the countercurrent exchange in a fish's gills,the oxygen concentration is always _______ in the water than the blood along the entire pathway of each lamella.

Accepted Answer

A)  higher
B)  lower
C)  the sameD) B) and C)
E) A) and B)

Question 11

The large number of alveoli in lungs improve diffusion by ______.

Accepted Answer

A)  decreasing the distance for diffusion
B)  increasing the surface area for diffusion
C)  increasing the concentration difference
D)  changing the diffusion constantE) A) and C)
F) C) and D)

Question 12

Major evolutionary changes in the mechanism of animal respiration have optimized the rate of diffusion by each of these methods except _________.

Accepted Answer

A)  increasing the surface area for diffusion
B)  increasing the concentration difference driving diffusion
C)  decreasing the distance for diffusion
D)  increasing the diffusion constantE) B) and D)
F) B) and C)

Question 13

Alveoli are used for gas exchange in _________.

Accepted Answer

A)  lungs
B)  gills
C)  trachea
D)  papulaeE) C) and D)
F) None of the above

Question 14

Hemoglobin structure consists of _______ polypeptide chains.

Accepted Answer

A)  two
B)  three
C)  four
D)  eight
E)  multipleF) A) and E)
G) A) and D)

Question 15

Ram ventilation is used by _____ during respiration.

Accepted Answer

A)  frogs
B)  tuna
C)  sharks
D)  birdsE) A) and B)
F) B) and D)

Question 16

The great efficiency of gills is derived from
I-the countercurrent flow of water over the gills.
II-the blood within the gills.
III-increasing the temperature of the blood to the gills.

Accepted Answer

A)  I and III
B)  just II
C)  just I
D)  I,II,and III
E)  I and IIF) A) and D)
G) B) and E)

Question 17

Respiration involves the movement of gases by the process of

Accepted Answer

A)  facilitated transport.
B)  active transport.
C)  diffusion.
D)  ventilation.E) A) and B)
F) B) and C)

Question 18

In a person at rest,blood that returns to the heart contains hemoglobin that is about ____ saturated with oxygen.

Accepted Answer

A)  3%
B)  22%
C)  75%
D)  97%E) All of the above
F) C) and D)

Exam 49: The Respiratory System

During exhalation,the diaphragm ________.

Correct Answer
verified

Hemoglobin structure consists of _______ polypeptide chains.

Correct Answer
verified

In a person at rest,blood that returns to the heart contains hemoglobin that is about ____ saturated with oxygen.

Correct Answer
verified

In the countercurrent exchange in a fish's gills,the oxygen concentration is always _______ in the water than the blood along the entire pathway of each lamella.

Correct Answer
verified

The many lamellae in the gills of fish improve respiratory efficiency by _______.

Correct Answer
verified

At rest,each breath moves a volume of air into and out of the lungs and this is called the _______ volume.

Correct Answer
verified

During an asthma attack,allergens trigger the release of ________ that cause severe constriction of the bronchi.

Correct Answer
verified

A second oxygen reserve is found in muscle cells using the oxygen-binding protein _______________.

Correct Answer
verified

Major evolutionary changes in the mechanism of animal respiration have optimized the rate of diffusion by each of these methods except _________.

Correct Answer
verified

Which of these dissolved gases cannot be transported by hemoglobin?

Correct Answer
verified

Ram ventilation is used by _____ during respiration.

Correct Answer
verified

Air enters human lungs from the mouth through the _________.

Correct Answer
verified

When a frog breaths,air enters first through its __________.

Correct Answer
verified

The large number of alveoli in lungs improve diffusion by ______.

Correct Answer
verified

Alveoli are used for gas exchange in _________.

Correct Answer
verified

The great efficiency of gills is derived from I-the countercurrent flow of water over the gills. II-the blood within the gills. III-increasing the temperature of the blood to the gills.

Correct Answer
verified

Respiration involves the movement of gases by the process of

Correct Answer
verified

All other terrestrial vertebrates except amphibians breathe by expanding their lungs and thereby creating a

Correct Answer
verified

Exam 49: The Respiratory System

During exhalation,the diaphragm ________.

Correct AnswerverifiedShow Answer

Hemoglobin structure consists of _______ polypeptide chains.

Correct AnswerverifiedShow Answer

In a person at rest,blood that returns to the heart contains hemoglobin that is about ____ saturated with oxygen.

Correct AnswerverifiedShow Answer

In the countercurrent exchange in a fish's gills,the oxygen concentration is always _______ in the water than the blood along the entire pathway of each lamella.

Correct AnswerverifiedShow Answer

The many lamellae in the gills of fish improve respiratory efficiency by _______.

Correct AnswerverifiedShow Answer

At rest,each breath moves a volume of air into and out of the lungs and this is called the _______ volume.

Correct AnswerverifiedShow Answer

During an asthma attack,allergens trigger the release of ________ that cause severe constriction of the bronchi.

Correct AnswerverifiedShow Answer

A second oxygen reserve is found in muscle cells using the oxygen-binding protein _______________.

Correct AnswerverifiedShow Answer

Major evolutionary changes in the mechanism of animal respiration have optimized the rate of diffusion by each of these methods except _________.

Correct AnswerverifiedShow Answer

Which of these dissolved gases cannot be transported by hemoglobin?

Correct AnswerverifiedShow Answer

Ram ventilation is used by _____ during respiration.

Correct AnswerverifiedShow Answer

Air enters human lungs from the mouth through the _________.

Correct AnswerverifiedShow Answer

When a frog breaths,air enters first through its __________.

Correct AnswerverifiedShow Answer

The large number of alveoli in lungs improve diffusion by ______.

Correct AnswerverifiedShow Answer

Alveoli are used for gas exchange in _________.

Correct AnswerverifiedShow Answer

The great efficiency of gills is derived from I-the countercurrent flow of water over the gills. II-the blood within the gills. III-increasing the temperature of the blood to the gills.

Correct AnswerverifiedShow Answer

Respiration involves the movement of gases by the process of

Correct AnswerverifiedShow Answer

All other terrestrial vertebrates except amphibians breathe by expanding their lungs and thereby creating a

Correct AnswerverifiedShow Answer

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