Rebecca Matthews
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practice exam for finals covering respiratory system

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Rebecca Matthews
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respiratory system

Question 1 of 33

1

What are the 3 functions of the respiratory system?
1.
2.
3.

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    O2 supply
    O2 production
    CO2 elimination
    CO2 supply
    acid/base balance
    regulation of O2

Explanation

Question 2 of 33

1

Which of the following is the bicarbonate equation (note <------> is the symbol for a reversible reaction):

Select one of the following:

  • CO2 + H2O <------> H3CO2 <------ H+ + HCO2

  • CO2 + H2O <------> H2CO3 <------> H+ + HCO3

  • H2CO3------> CO2 + H2O <------> H+ + HCO3

  • CO2 + H2O <------> H2CO3 <------> H+ + HCO3-

Explanation

Question 3 of 33

1

Fill the blank space to complete the text.

The is the point of attachment for the lungs.

Explanation

Question 4 of 33

1

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The right heart takes blood from the ( systemic, pulmonary ) circuit and pumps it into the ( pulmonary, systemic ) circuit.

Explanation

Question 5 of 33

1

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The left heart takes blood from the ( pulmonary, systemic ) circuit and pumps it into the ( systemic, pulmonary ) circuit.

Explanation

Question 6 of 33

1

List all the structures through which air passes from the nostrils to the alveoli.

------> ------> ------> ------> ------> ------> ------> ------> ------> ------> ------> ------>

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    Nostrils
    vestibule
    posterior nares
    nasopharynx
    oropharynx
    laryngopharynx
    larynx (voice box)
    trachea
    primary bronchi
    secondary bronchi
    tertiary bronchi
    bronchioles (2 kinds)
    alveoli

Explanation

Question 7 of 33

1

Most of the gas exchange in the lungs occurs in the:

Select one or more of the following:

  • bronchioles

  • alveoli

  • dead space

  • membranes

Explanation

Question 8 of 33

1

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The outer covering of the lung is called the pleura

Explanation

Question 9 of 33

1

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Although the lungs are only attached to the body at the ( hilus, apex ), the lungs fill the volume provided in the thoracic cavity because of ( negative, positive ) ( intrapleural, interpleural ) ( pressure., force )

Explanation

Question 10 of 33

1

The inverse relationship between pressure and volume is who's law?

Select one of the following:

  • LaPlace

  • Boyle

Explanation

Question 11 of 33

1

The purpose in the cartilaginous rings in the trachea are:

Select one of the following:

  • Maintain constant pressure and even air flow

  • allow for optimal vital lung capacity

  • prevent it from collapsing

  • allow for deglutition (swallowing)

Explanation

Question 12 of 33

1

Most of the resistance in the respiratory system is found in the intrapleural space and thus it is filled with fluid to ease this problem.

Select one of the following:

  • True
  • False

Explanation

Question 13 of 33

1

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Alveolar pressure is ( sub-atmospheric, atmospheric, Positive (greater) than atmospheric P ) during inspiration.

Explanation

Question 14 of 33

1

The principal muscles of expiration are:

Select one of the following:

  • abdominal

  • thoracic

  • diaphragmatic

Explanation

Question 15 of 33

1

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The muscles between the ribs are the

Explanation

Question 16 of 33

1

place the appropriate type of intercostal muscle with it's correct type of action:
Inspiration ------>
Expiration ------>

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    external intercostal
    internal intercostal

Explanation

Question 17 of 33

1

Match the following terms correctly:
------> air into the intrapleural space
------> water into the intrapleural space
------> blood into the intrapleural space
------> pain associated with inflammation of the pleura, friction rub
-----> where air and water meet

Drag and drop to complete the text.

    pneumothorax
    hydrothorax
    hemothorax
    pleurisy
    air/liquid interface -

Explanation

Question 18 of 33

1

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The pressure in small soap bubbles is ( higher, lower ) than the pressure in large bubbles made of the same soap solution?

Explanation

Question 19 of 33

1

How many air/liquid interfaces are there in a soap bubble?

Select one of the following:

  • 1

  • 2

  • 0

  • 4

Explanation

Question 20 of 33

1

Which of the following plays a role in stabilizing alveoli of different sizes and decreases surface tension?

Select one of the following:

  • pulmonary surfactant

  • LaPlace law states the surface tension is due to water molecules starting to get closer

  • a soapy fluid on the alveoli called secraftin

  • the negative pressure withing the lungs

Explanation

Question 21 of 33

1

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Indicate if the effect of the variable indicated on diffusion rate would be direct or inverse:
increased concentration gradient ------> ( direct, inverse )
increased molecular size ------> ( inverse, direct )
increased diffusion distance ------> ( inverse, direct )
increased surface area ------> ( direct, inverse )
increased temperature ------> ( direct, inverse )

Explanation

Question 22 of 33

1

It is Boyle's Law that explains why it is so hard to get inflation started when blowing up a balloon?

Select one of the following:

  • True
  • False

Explanation

Question 23 of 33

1

Indicate the effect of the variable on hemoglobin-oxygen affinity and if the effect will favor O2 loading or unloading:

Increased temperature

Select one or more of the following:

  • decreased hemoglobin-O2 affinity

  • increased hemoglobin- O2 affinity

  • O2 loading

  • O2 unloading

Explanation

Question 24 of 33

1

Indicate the effect of the variable on hemoglobin-oxygen affinity and if the effect will favor O2 loading or unloading:

increased CO2

Select one or more of the following:

  • decreased hemoglobin-O2 affinity

  • increased hemoglobin-O2 affinity

  • O2 loading

  • O2 unloading

Explanation

Question 25 of 33

1

Indicate the effect of the variable on hemoglobin-oxygen affinity and if the effect will favor O2 loading or unloading:

decreased pH

Select one or more of the following:

  • increased hemoglobin-O2 affinity

  • decreased hemoglobin-O2 affinity

  • O2 loading

  • O2 unloading

Explanation

Question 26 of 33

1

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Hyperventilation results in an ( decrease, increase ) in blood CO2.

Explanation

Question 27 of 33

1

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Hyperventilation results in an ( increase, decrease ) in blood pH.

Explanation

Question 28 of 33

1

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Most CO2 transported in the blood is transported as ions.

Explanation

Question 29 of 33

1

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( CO2, O2 ) dissolves more easily in water.

Explanation

Question 30 of 33

1

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In terrestrial vertebraes the primary regulated variable in respiration is ( O2, CO2 ).

Explanation

Question 31 of 33

1

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In aquatic vertebrates the primary regulated variable in respiration is ( CO2, O2 ).

Explanation

Question 32 of 33

1

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A pH of 10 is ( 1000, 10, 100, 10000 ) times more ( base, acid ) than a pH of 7.

Explanation

Question 33 of 33

1

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Adding acid to water generally ( increases, decreases ) the pH.

Explanation