Question 1

Ventilation causes alveoli of the lungs to have ________ the blood in pulmonary capillaries.

Accepted Answer

A)  a lower PO2 and a higher PCO2 than
B)  the same PO2 and PCO2 as
C)  a higher PO2 and a lower PCO2 than
D)  No answer is correct.E) B) and C)
F) All of the above

Question 2

Explain what happens when carbonic acid associates with carbonic anhydrase and how this can impact the blood pH.

Accepted Answer

Carbonic anhydrase s...

Question 3

How is most carbon dioxide transported in the blood?

Accepted Answer

A)  as gas bubbles of CO2,just as in carbonated soft drinks
B)  as bicarbonate ions (HCO3) 
C)  on the free hemoglobins since they have lost their oxygen in the tissues
D)  as carbon monoxide
E)  as carbon compounds and oxygen radicalsF) B) and C)
G) C) and D)

Question 4

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) C) and E)
G) None of the above

Question 5

If a person overdosed on depressant-type drugs that slow down breathing,in what direction would the reaction shift? Explain your answer. $\begin{array} { l  }
\begin{array} { l  }\mathrm{H}^{+} \
 \text {hydrogen } \ \text {ion } \
\end{array}&+&\begin{array} { l  }\mathrm{HCO}_{3}{ }^{-}\
 \text {bicarbonate } \ \text { ion } \
\end{array}&\rightarrow&\begin{array} { l  }\mathrm{H}_{2} \mathrm{CO}_{3}\
 \text { carbonic } \ \text { acid} \
\end{array}&\rightarrow&\begin{array} { l  }\mathrm{H}_{2} \mathrm{O}\
 \text {water } \ 
\end{array}&+&\begin{array} { l  }\mathrm{CO}_{2}\
 \text {carbon } \ \text {dioxide } \
\end{array}
\end{array}$

Accepted Answer

Slow shallow breathing increases the CO₂ ...

Question 6

Which statement is correct about how carbon dioxide is carried in the bloodstream?

Accepted Answer

A)  Carbon dioxide enters the bloodstream from the tissues.It then combines with hemoglobin to form carbaminohemoglobin but most of it is carried in the form of bicarbonate.
B)  Carbon dioxide enters the bloodstream from the atmosphere.It then combines with hemoglobin to form carbaminohemoglobin but most of it is carried in the form of bicarbonate.
C)  Carbon dioxide enters the bloodstream from the tissues.It then combines with hydrogen ions to form bicarbonate ion but most of it is carried in the form of carbaminohemoglobin.
D)  Carbon dioxide enters the bloodstream from the tissues.It then combines with hemoglobin to form bicarbonate ion but most of it is carried in the form of carbaminohemoglobin in the bloodstream.
E)  Carbon dioxide enters the bloodstream from the atmosphere.It then combines with water to form carbonic acid but most of it is carried in the form of bicarbonate.F) C) and D)
G) A) and B)

Question 7

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) A) and E)
G) All of the above

Question 8

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) A) and B)
G) A) and C)

Question 9

As food is swallowed it is prevented from entering the trachea by the

Accepted Answer

A)  pharynx.
B)  larynx.
C)  bronchioles.
D)  saliva.
E)  epiglottis.F) B) and E)
G) A) and E)

Question 10

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) A) and B)
G) B) and C)

Question 11

Which of the following respiratory disorders might be cured in the future through the use of gene therapy?

Accepted Answer

A)  cystic fibrosis
B)  emphysema
C)  lung cancer
D)  asthma
E)  pulmonary fibrosisF) C) and E)
G) A) and D)

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Explain how carbon dioxide is transported through the bloodstream?

Accepted Answer

Answers may vary.CO₂ enters the bloodstre...

Exam 35: Respiratory Systems

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 Answer
verified

How is most carbon dioxide transported in the blood?

Correct Answer
verified

Explain how carbon dioxide is transported through the bloodstream?

Correct Answer
verified
Answers may vary.CO₂ enters the bloodstre...
View Answer

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

Correct Answer
verified

Explain what happens when carbonic acid associates with carbonic anhydrase and how this can impact the blood pH.

Correct Answer
verified
Carbonic anhydrase s...
View Answer

Which of the following respiratory disorders might be cured in the future through the use of gene therapy?

Correct Answer
verified

Which statement is correct about how carbon dioxide is carried in the bloodstream?

Correct Answer
verified

Ventilation causes alveoli of the lungs to have ________ the blood in pulmonary capillaries.

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified
Slow shallow breathing increases the CO₂ ...
View Answer

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

Correct Answer
verified

As food is swallowed it is prevented from entering the trachea by the

Correct Answer
verified

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

Correct Answer
verified

Exam 35: Respiratory Systems

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

How is most carbon dioxide transported in the blood?

Correct AnswerverifiedShow Answer

Explain how carbon dioxide is transported through the bloodstream?

Correct AnswerverifiedAnswers may vary.CO2 enters the bloodstre...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Explain what happens when carbonic acid associates with carbonic anhydrase and how this can impact the blood pH.

Correct AnswerverifiedCarbonic anhydrase s...View AnswerShow Answer

Which of the following respiratory disorders might be cured in the future through the use of gene therapy?

Correct AnswerverifiedShow Answer

Which statement is correct about how carbon dioxide is carried in the bloodstream?

Correct AnswerverifiedShow Answer

Ventilation causes alveoli of the lungs to have ________ the blood in pulmonary capillaries.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedSlow shallow breathing increases the CO2 ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

As food is swallowed it is prevented from entering the trachea by the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Answers may vary.CO₂ enters the bloodstre...
View Answer

Correct Answer
verified

Correct Answer
verified
Carbonic anhydrase s...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Slow shallow breathing increases the CO₂ ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified