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LBBBI15 > RESPIRATORY PHYSIOLOGY > Flashcards

RESPIRATORY PHYSIOLOGY Flashcards

1
Q

conducts air and is not involved in gas exchange

a) conducting zone
b) respiratory zone
c) dead space

A

Conducting Zone

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2
Q

involved in gas exchange

a) conducting zone
b) respiratory zone
c) dead space

A

Respiratory Zone

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3
Q

The parts involved in the conducting zone

a) anatomic dead space
b) physiologic dead space
c) alveolar dead space

A

Anatomic Dead Space

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4
Q

Part involved in the respiratory zone that does not undergo gas exchange due to lung disease

a) anatomic dead space
b) physiologic dead space
c) alveolar dead space

A

Alveolar Dead Space

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5
Q

Anatomic Dead Space + Alveolar Dead Space

a) anatomic dead space
b) physiologic dead space
c) alveolar dead space

A

Physiologic Dead Space

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6
Q

What is the functional anatomic unit of the lung?

a) bronchopulmonary segments
b) respiratory zone
c) trachea, bronchi, and alveoli

A

Bronchopulmonary Segments

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7
Q

Main Muscle involved in breathing

a) diaphragm
b) alveolar dead space
c) ventilation
d) anatomic dead space

A

Diaphragm

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8
Q

Dome-shaped and separates the thorax from the abdomen

A

Diaphragm

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9
Q

[Inspiration/Expiration]

The diaphragm increases the volume of the chest → intrathoracic pressure falls (becomes more negative) → air flows into the lungs

A

During Inspiration

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10
Q

[Inspiration/Expiration]

The diaphragm relaxes → intrathoracic pressure increases (becomes more positive) → air flows out of the lungs

A

During Expiration

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11
Q

What part of the brain is known as the ‘respiratory center’ of the body?

a) mucociliary
b) vocalization
c) medulla oblongata
d) diaphragm

A

Medulla Oblongata

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12
Q

coming from the right ventricle of the heart through the pulmonary artery

a) oxygenated blood
b) deoxygenated blood

A

Oxygenated blood

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13
Q

Maintenance of the Acid-Base Balance:

[Retains/Excretes] CO2 if the pH of the blood is too basic

A

Retains = basic

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14
Q

Maintenance of the Acid-Base Balance:

[Retains/Excretes] CO2 if the pH of the blood is too acidic

A

Excretes = acidic

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15
Q

prevents and expels foreign objects before reaching the lungs

a) pulmonary, systemic
b) spirometry
c) mucociliary
d) oxygenates

A

Mucociliary clearance system

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16
Q

Site of gas exchange

A

Alveoli

17
Q

Produces surfactant which decreases surface tension and prevents alveolar collapse

a) Type I Pneumocyte
b) Type II Pneumocyte
c) Type III Pneumocyte

A

Type II Pneumocyte

18
Q
  • 96-98% of surface area
  • For gas exchange

a) Type I Pneumocyte
b) Type II Pneumocyte
c) Type III Pneumocyte

A

Type I Pneumocyte

19
Q

Main component of surfactant:

a) trachea, bronchi, and alveoli
b) respiratory zone
c) dipalmitoylphosphatidylcholine
d) alveoli

A

Dipalmitoylphosphatidylcholine

20
Q

AKA ‘breathing’

A

Respiration

21
Q

Exchange of air between atmosphere and alveoli

a) pulmonary, systemic
b) respiration
c) pulmonary ventilation
d) systemic ventilation

A

Pulmonary Ventilation

22
Q

Gas [transport/exchange] of O2 and CO2 between alveolar air and blood in the lung capillaries by diffusion

A

Exchange

23
Q

Gas [exchange/transport] of O2 and CO2 through pulmonary and systemic circulation

A

Transport

24
Q

Cellular utilization of O2 and production of CO2

A

Cellular respiration

25
Q

Gas exchange of O2 and CO2 between blood in tissue capillaries and cells in tissues by:

A

diffusion

26
Q

One of the most commonly used approaches to test pulmonary function

a) vocalization
b) pulmonary, systemic
c) spirometry
d) mucociliary

A

Spirometry

27
Q

Volume of air that can be expired in the first second of a forced maximal expiration

a) tidal volume (TV)
b) residual volume (RV)
c) forced expiratory volume (FEV1)
d) expiratory volume (EV)

A

Forced Expiratory Volume (FEV1)

28
Q

Volume inspired and expired in a normal breath

a) inspiratory reserve volume (IRV)
b) tidal volume (TV)
c) expiratory reserve volume (erv)
d) residual volume (RV)

A

Tidal Volume (TV)

29
Q

Volume that can be inspired over and above the tidal volume (Used in exercise)

a) inspiratory reserve volume (IRV)
b) expiratory reserve volume (ERV)
c) residual volume (RV)
d) tidal volume (TV)

A

Inspiratory Reserve Volume (IRV)

30
Q

Volume that can be expired after the expiration of tidal volume

a) inspiratory reseve volume (IRV)
b) residual volume (RV)
c) expiratory reserve volume (ERV)
d) tidal volume (TV)

A

Expiratory Reserve volume (ERV)

31
Q

Volume that remains in the lungs after a maximal expiration (after ERV)

a) expiratory reserve volume (ERV)
b) tidal volume (TV)
c) residual volume (RV)
d) inspiratory capacity (IC)

A

Residual Volume (RV)

32
Q

Lung Capacity:
TV + IRV

a) total lung capacity (TLC)
b) vital capacity (VC)
c) inspiratory capacity (IC)
d) functional residual capacity (FRC)

A

Inspiratory Capacity (IC)

33
Q

Lung Capacity:
- TV + IRV + ERV
- The volume that can be forcibly expired after a maximal inspiration

a) total lung capacity (TLC)
b) vital capacity (VC)
c) inspiratory capacity (IC)
d) functional residual capacity (FRC)

A

Vital Capacity (VC)

34
Q

Lung Capacity:
- ERV + RV
- Volume in the lungs after a TV is expired

a) total lung capacity (TLC)
b) vital capacity (VC)
c) inspiratory capacity (IC)
d) functional residual capacity (FRC)

A

Functional Residual Capacity (FRC)

35
Q

Lung Capaity:
- Total lung volume (~6L)

a) total lung capacity (TLC)
b) vital capacity (VC)
c) inspiratory capacity (IC)
d) functional residual capacity (FRC)

A

Total Lung Capacity (TLC)

36
Q

Which two lung volumes CANNOT be measured by spirometry

a) residual volume (RV) and tidal volume (TV)
b) residual volume (RV) and functional residual capacity (FRC)
c) IRV and ERV

A

Residual Volume (RV) & Functional Residual Capacity (FRC)

37
Q

Gas transport of O2 and CO2 through _________________ and ________________ circulation

a) pulmonary, systemic
b) nose, sinuses, and larynx
c) vocalization
d) mucociliary

A

pulmonary and systemic

38
Q

What happens to the diaphragm during expiration?

a) it relaxes, and intrathoracic pressure increases (becomes more positive) then air flows out of the lungs
b) increases volume of the chest and intrathoracic pressure falls (becomes more negative), then air flows into the lungs

A

It relaxes, and intrathoracic pressure increases (becomes more positive), then air flows out of the lungs

39
Q

Functions of the Respiratory System:

A
  1. Oxygenates blood
  2. Vocalization of sounds
  3. Metabolic capabilities
  4. Blood pressure regulation
  5. Maintenance of the Acid-Base Balance
  6. Mucociliary clearance system
  7. Humidifies air
  8. Immune Defense

LBBBI15 (10 decks)

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