Question 1

Which of the following statements about partial pressures of gases is TRUE?

Accepted Answer

A)   PO2 in blood is greater than PO2 in tissues; PCO2 in blood is greater than PCO2 in tissues
B)   PO2 in blood is greater than PO2 in tissues; PCO2 in blood is less than PCO2 in tissues
C)   PO2 in blood is greater than PO2 in tissues; PCO2 in blood = PCO2 in tissues
D)   PO2 in blood is less than PO2 in tissues; PCO2 in blood is less than PCO2 in tissues
E)   PO2 in blood is less than PO2 in tissues; PCO2 in blood is greater than PCO2 in tissuesF) A) and D)
G) C) and E)

Question 2

Which of the following is an effect of aging on the respiratory system?

Accepted Answer

A)   vital capacity is unchanged
B)   minute ventilation rates increase
C)   residual volume increases
D)   gas exchange in the lungs remains unchangedE) A) and B)
F) A) and C)

Question 3

Calculate the vital lung capacity of a person with an inspiratory reserve volume of 3200 mL, a tidal volume of 525 mL, and an expiratory reserve volume of 900 mL.

Accepted Answer

A)   1215 ml
B)   1825 ml
C)   4625 ml
D)   6050 ml
E)   7200 mlF) C) and E)
G) A) and B)

Question 4

At the venous end of tissue capillaries, there is no net movement of O2 and CO2.

Accepted Answer

A) True 
 B)False

Question 5

A decrease in the surface area of the respiratory membrane will cause the diffusion rate to

Accepted Answer

A)   increase.
B)   decrease.
C)   remain unchanged.D) A) and B)
E) None of the above

Question 6

Match the pulmonary volume with its definition.
1. Volume of air inspired or expired with each breath
2. Amount of air that can be inspired forcefully after normal inspiration
3. Amount of air that can be forcefully expired after normal exhalation
4. Volume of air in the lungs after forceful expiration

Accepted Answer

Tidal volume
Inspir...

Question 7

For air to flow into or out of the lungs, there must be

Accepted Answer

A)   a volume gradient established between the atmosphere and the alveoli.
B)   a temperature gradient between the atmosphere and the alveoli.
C)   a pressure gradient established between the atmosphere and the alveoli.
D)   a diffusion gradient between the atmosphere and the alveoli.
E)   None of these choices is correct.F) B) and E)
G) A) and B)

Question 8

The result of the process of inspiration is

Accepted Answer

A)   increased alveolar volume causes increased alveolar pressure.
B)   increased alveolar volume causes decreased alveolar pressure.
C)   decreased alveolar volume causes increased alveolar pressure.
D)   decreased alveolar volume causes decreased alveolar pressure.
E)   increased alveolar pressure caused decreased alveolar volume.F) A) and B)
G) None of the above

Question 9

Match the respiratory system structure with its description.
1. Visible structure on the face
2. Extends from the nares to the choanae
3. Common opening for digestive and respiratory systems
4. Located posterior to the choanae and superior to the soft palate
5. Extends from the soft palate to the epiglottis
6. Extends from the tip of the epiglottis to the esophagus
7. Passageway for air; extends from the base of the tongue to the trachea
8. Windpipe; membranous tube attached to the larynx
9. Large, conical shaped organs of respiration
10. Small, air-filled chambers for where gas exchange takes place

Accepted Answer

External nose
Nasal cavity
P...

Question 10

Which of the following is NOT a respiratory adaptation to exercise training?

Accepted Answer

A)   vital capacity increases
B)   tidal volume at maximal exercise will increase
C)   increased minute ventilation after training
D)   after training, respiratory rate at rest is lowerE) None of the above
F) B) and C)

Question 11

The partial pressure of a gas can be measured in millimeters of mercury.

Accepted Answer

A) True 
 B)False

Question 12

The direction of gas movement is determined by

Accepted Answer

A)   temperature.
B)   size of the gas molecule.
C)   solubility of the gas in blood.
D)   partial pressure differences.
E)   pH.F) A) and C)
G) A) and B)

Question 13

The part of the ventral respiratory group of the medullary respiratory center that establishes the basic breathing pattern is called the ___________.

Accepted Answer

A)   pre-Botzinger complex
B)   pontine respiratory group
C)   inspiratory respiratory group
D)   respiratory centerE) C) and D)
F) None of the above

Question 14

The Hering-Breuer reflex

Accepted Answer

A)   causes erratic respirations.
B)   helps prevent overinflation of the lungs.
C)   has its sensory components in the sympathetic nerves.
D)   is a normal response to increased oxygen content in the blood.
E)   limits how much air a person can expire.F) A) and D)
G) D) and E)

Question 15

Which of the following statements about partial pressures of gases is TRUE?

Accepted Answer

A)   PO2 in lung is greater than PO2 in blood; PCO2 in lung is greater than PCO2 in blood
B)   PO2 in lung is greater than PO2 in blood; PCO2 in lung is less than PCO2 in blood
C)   PO2 in lung is greater than PO2 in blood; PCO2 in lung = PCO2 in blood
D)   PO2 in lung is less than PO2 in blood; PCO2 in lung is less than PCO2 in blood
E)   PO2 in lung is less than PO2 in blood; PCO2 in lung is greater than PCO2 in bloodF) B) and E)
G) C) and E)

Question 16

Most oxygen transported in the blood is combined with __________.

Accepted Answer

A)   myoglobin
B)   carbon dioxide
C)   hemoglobin
D)   waterE) C) and D)
F) B) and C)

Question 17

Oxygen-poor blood is carried through systemic veins from the body tissues back to the heart.

Accepted Answer

A) True 
 B)False

Question 18

Inspiration begins as

Accepted Answer

A)   the diaphragm relaxes.
B)   the diaphragm contracts.
C)   the lungs expand.
D)   the lungs contract.
E)   none of the choices are correct.F) B) and E)
G) A) and D)

Question 19

The medical term for a collapsed lung is pneumothorax.

Accepted Answer

A) True 
 B)False

Question 20

Typically, oxygen travels down the partial pressure gradient _____ the alveoli ____ the blood, and carbon dioxide travels _____ the blood ____the alveoli.

Accepted Answer

A)   from, to, to from
B)   from to, from to
C)   to from, from to
D)   to from, to fromE) A) and B)
F) A) and C)

Exam 15: Respiratory System

Oxygen-poor blood is carried through systemic veins from the body tissues back to the heart.

Correct Answer
verified

Which of the following statements about partial pressures of gases is TRUE?

Correct Answer
verified

For air to flow into or out of the lungs, there must be

Correct Answer
verified

The direction of gas movement is determined by

Correct Answer
verified

The part of the ventral respiratory group of the medullary respiratory center that establishes the basic breathing pattern is called the ___________.

Correct Answer
verified

Correct Answer
verified
Tidal volume
Inspir...
View Answer

Which of the following is an effect of aging on the respiratory system?

Correct Answer
verified

At the venous end of tissue capillaries, there is no net movement of O2 and CO2.

Correct Answer
verified

Inspiration begins as

Correct Answer
verified

Typically, oxygen travels down the partial pressure gradient ___ the alveoli the blood, and carbon dioxide travels _ the blood __the alveoli.

Correct Answer
verified

Which of the following is NOT a respiratory adaptation to exercise training?

Correct Answer
verified

Correct Answer
verified
External nose
Nasal cavity
P...
View Answer

The partial pressure of a gas can be measured in millimeters of mercury.

Correct Answer
verified

Calculate the vital lung capacity of a person with an inspiratory reserve volume of 3200 mL, a tidal volume of 525 mL, and an expiratory reserve volume of 900 mL.

Correct Answer
verified

The Hering-Breuer reflex

Correct Answer
verified

A decrease in the surface area of the respiratory membrane will cause the diffusion rate to

Correct Answer
verified

The medical term for a collapsed lung is pneumothorax.

Correct Answer
verified

The result of the process of inspiration is

Correct Answer
verified

Most oxygen transported in the blood is combined with __________.

Correct Answer
verified

Which of the following statements about partial pressures of gases is TRUE?

Correct Answer
verified

Exam 15: Respiratory System

Oxygen-poor blood is carried through systemic veins from the body tissues back to the heart.

Correct AnswerverifiedShow Answer

Which of the following statements about partial pressures of gases is TRUE?

Correct AnswerverifiedShow Answer

For air to flow into or out of the lungs, there must be

Correct AnswerverifiedShow Answer

The direction of gas movement is determined by

Correct AnswerverifiedShow Answer

The part of the ventral respiratory group of the medullary respiratory center that establishes the basic breathing pattern is called the ___________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedTidal volume Inspir...View AnswerShow Answer

Which of the following is an effect of aging on the respiratory system?

Correct AnswerverifiedShow Answer

At the venous end of tissue capillaries, there is no net movement of O2 and CO2.

Correct AnswerverifiedShow Answer

Inspiration begins as

Correct AnswerverifiedShow Answer

Typically, oxygen travels down the partial pressure gradient _____ the alveoli ____ the blood, and carbon dioxide travels _____ the blood ____the alveoli.

Correct AnswerverifiedShow Answer

Which of the following is NOT a respiratory adaptation to exercise training?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedExternal nose Nasal cavity P...View AnswerShow Answer

The partial pressure of a gas can be measured in millimeters of mercury.

Correct AnswerverifiedShow Answer

Calculate the vital lung capacity of a person with an inspiratory reserve volume of 3200 mL, a tidal volume of 525 mL, and an expiratory reserve volume of 900 mL.

Correct AnswerverifiedShow Answer

The Hering-Breuer reflex

Correct AnswerverifiedShow Answer

A decrease in the surface area of the respiratory membrane will cause the diffusion rate to

Correct AnswerverifiedShow Answer

The medical term for a collapsed lung is pneumothorax.

Correct AnswerverifiedShow Answer

The result of the process of inspiration is

Correct AnswerverifiedShow Answer

Most oxygen transported in the blood is combined with __________.

Correct AnswerverifiedShow Answer

Which of the following statements about partial pressures of gases is TRUE?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Tidal volume
Inspir...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Typically, oxygen travels down the partial pressure gradient ___ the alveoli the blood, and carbon dioxide travels _ the blood __the alveoli.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
External nose
Nasal cavity
P...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified