Quiz 4&5 Respiratory Physiology Flashcards

(89 cards)

1
Q

Tidal volume (TV)

A

The amount of air inspired or expired during normal, quiet respiration

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2
Q

Inspiratory reserve volume (irv)

A

The amount of air which can be forcefully inspired above and be found that taken in during a normal inspiration

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3
Q

Expiratory reserve volume (erv)

A

The maximal amount of air which can be forcefully expired following a normal expiration

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4
Q

Residual volume (rv)

A

The amount of air which remains trapped in the lungs after a maximal expiratory effort

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5
Q

Total lung capacity (tlc)

A

The total amount of air the lungs can contain - the sum of all four volumes

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6
Q

Total lung capacity formula

A

=total volume + inspiratory reserve volume + expiratory reserve volume + residual volume

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7
Q

Vital capacity (vc)

A

The maximal amount air of that can be forcefully expired after a maximum inspiration

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8
Q

Vital capacity (vc) formula

A

=total volume plus inspiratory reserve volume plus expiratory reserve volume

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9
Q

Functional residual capacity (frc)

A

The amount of air remaining in the lungs after a normal expiration

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10
Q

Functional residual capacity (frc) formula

A

= residual volume plus expiratory reserve volume

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11
Q

Inspiratory capacity (ic)

A

The maximal amount of air which can be inspired after a normal expiration

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12
Q

Inspiratory capacity (ic) formula

A

= total volume plus inspiratory reserve volume

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13
Q

Normal adult male

A

Diagram on the first page

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14
Q

Spirometty

A

A pulmonary function test that is useful for evaluating changes in respiratory system, it can distinguish between restrictive and obstructive diseases

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15
Q

Restrictive diseases

A

Affect the lung capacity to expand

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16
Q

Obstructive pulmonary diseases

A

Cause the lungs to hyperinflate due to an increase in airway restriction

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17
Q

Spirometer

A

For measuring respiratory volumes

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18
Q

Respiratory minute volume (L/min)

A

Tells us the total amount of gas that flows into of out of the respiratory tract in 1 minute

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19
Q

Respiratory minute volume (L/min) formula

A

= tidal volume (mL) x respiratory rate (breaths/min)

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20
Q

Nomogram

A

For an predicting an individual’s vital capacity, probability of an event based on known relationships to best prescribe treatment and care

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21
Q

Heymer test of respiratory reserve

A

-a better index of respiratory reserve
-principal value in following volume changes caused either by disease or recovery from a disease

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22
Q

Decreased vital capacity

A

Individuals with left-sided heart
Individuals with paralytic polio

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23
Q

Poliomyelitis or polio

A

Virus that infects an individual’s spinal cord and causes paralysis

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24
Q

Breath-holding time

A

Gives an indication of individual’s functional respiratory reserve and efficiency of their respiratory system

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25
The longer an individual’s breath holding
The more efficient their respiratory system is at maintaining their blood’s pH
26
Normal values for the Heymer test-male
50-70 seconds
27
Normal values for the Heymer test-female
50 -60 seconds
28
Variety of receptors, reflexes, and feedback processes
The concentration of O2 and co2 in the lungs and blood Is regulated by Serve to control our respiration patterns
29
Measuring tidal volume
Exhaling through a tube connected to a dry gas meter
30
Dry gas meter
Measures the volume of gas that passes through it and keeps a cumulative total
31
Calculating tidal volume
Dividing the total air exhaled by the #of breathes made over a collection period
32
Metabolic rate units
mL O2 consumed/min
33
Calculating metabolic rate
Difference between the percentage O2 in inhaled air and the percentage of O2 in exhaled air, then multiplying this percentage difference to the volume of air breathed during a measured time span
34
Inhaled air
20.95%
35
Exhaled air
Measured by the oxygen analyses
36
Measured time span
Measured by the dry gas meter
37
The rate at which your cells consume oxygen
Must be matched by the rate of oxygen delivery
38
The rate of oxygen consumption (VO2) is equal to (ventilation)
1. The rate at which you obtain oxygenfrom the environment across the respiratory exchangesurface of the lungs
39
The rate of oxygen consumption (VO2) is equal to (perfusion)
2.the rate at which oxygen is extractedfrom the blood going through the capillaries of the metabolizing cells
40
Ventilation-perfusion coupling
Exchange between ventilation and perfusion
41
Increasing ventilation
Increasing respiratory late and tidal volume
42
Increasing perfusion
Increasing heart rate
43
Calculating ventilation and perfusion
Measuring the flow (ml/min) of the medium air of blood) and multiplying them by the amount of oxygen that is extracted per ml of medium that passes the exchange surface
44
Minute volume (VM)
Flow of air in respiratory system
45
Cardiac output (CO)
Flow of air in the circulatory system
46
The amount of oxygen extracted per ml of medium can be calculated from
The difference between amounts of oxygen per ml of medium entering and leaving the exchange surfaces
47
In respiratory system
Concentrations of oxygen in the inspired air (CO2i) and the exhaled air (CO2e)
48
In circulatory system
Concentrations of oxygen in the systemic arterial blood (CO2a) and systemic venous blood (CO2v)
49
Rate of oxygen consumption (VO2) formula
= minute volume x (concentrations of oxygen in the inspired air - concentrations of oxygen in the exhaled air)= cardiac output x ( concentrations of oxygen in the systemic arterial blood - contentrations of oxygen in the systemic venous blood)
50
Metabolic rate (VO2)
= minute volume x (concentrations of oxygen in the inspired air - concentrations of oxygen in the exhaled air)
51
In most resting people
Arterial blood is 100% saturated with oxygen but mixed venous blood is 60% saturated
52
Maximum oxygen content (arterial blood is 100% saturated)
Concentration of oxygen in systemic arterial blood (CO2a) =average hemoglobin concentration ( g Hb / 100ml blood) x 1.34 ml of O2/ g Hb
53
Content of mixed venous blood at rest
Concentrations of oxygen in the systemic venous blood (CO2v)= 0.6 x Concentrations of oxygen in the systemic arterial blood
54
Resting cardiac output formula
= rate of oxygen consumption/ con. Of oxygen in arterial blood - venous blood
55
Resting stroke volume (Sv)
= cardiac output/ heart rate
56
During this exercise ( breathing rate, tidal volume and oxygen consumption)
Oxygen content of venous blood falls
57
Pulse pressure
Is proportional to stroke volume
58
Stroke volume during exercise
Pulse pressure resting /pulse pressure exercising = stroke volume resting / stroke volume exercising
59
Neural centers location
Medulla and pons
60
Neural centers
Control increase or decrease In the Rhythm and rate of respiration
61
Neural centers
Initiate the basic rhythm of simple activities Can change the rate and depth of inspiration
62
Blood ph levels
Affected by changes in Oxygen of carbon dioxide concentrations in blood
63
Carbonic acid- bicarbonate buffer system
Carbonic acid disassociates Into bicarbonate and hydrogen ions Hydrogen plus hemoglobin Bicarbonates become alkaline buffers
64
When carbon dioxide levels in blood increase
Increase of hydrogen Decrease in ph(more acidic)
65
When carbon dioxide levels in blood decrease
Decrease in hydrogen Increase in ph (more alkaline)
66
Increase the rate and depth of respiration
Rapid deep breathing Reduction of carbon dioxide
67
Reduction of carbon dioxide
Decrease in carbonic levels Ph increases
68
Decrease the rate and depth of respiration
Slow shallow breathing Accumulation of carbon dioxide
69
Accumulation of carbon dioxide
Increase of carbonic acid levels Decrease in ph
70
Cardiac output during exercise
= stroke volume x heart rate
71
Increasing stroke volume
Increasing cardiac output Increasing heart rate
72
Respiratory rate decrease
Decrease in the frequency of inspirations
73
Chemoreceptors
Stimulated by increased acidity of blood Communicate with neural receptors in the brain
74
Oxygen content of venous blood during exercise (CO2v)
=oxygen content of systemic arterial blood-( rate of oxygen consumption / cardiac output)
75
Inhale deeply
Increase in tidal volume
76
Breathe faster
Increase in respiratory rate
77
Decrease in respiratory rate
Holding breath Example: concentrating on a task Also, reading silently
78
Decrease in respiration
Tidal volume increases Respiratory rate Increases
79
Breathing Into a paper bag then rebreathing
Carbon dioxide will accumulate in blood Increase in respiratory rate increase in tidal volume
80
Hyperventilation
Occurs when an individual takes rapid and deep breaths that exceeds the body's need to eliminate carbon dioxide
81
Reduction in circulation
Causes feelings of dizziness OR faintness
82
Concentration of carbon dioxide is too low
Decrease in respiratory rate Decrease in tidal volume (slow shallow breathes)
83
Apnea
Cessation of breathing Occurs until carbon dioxide levels increase enough to meet metabolic demand
84
Breathing into a paper bag
Helps with hyperventilating Reduces the amount carbon dioxide that is eliminated from the body
85
Hyperventilating involuntarily
Seen during anxiety attacks
86
Hyperventilating
Respiratory rate increases tidal volume increase Breathe in a paper bag to prevent dizziness and fainting
87
Chronic obstructive pulmonary diseases (COPD) and asthma
Respiratory disorders Affect breathing normally
88
Chronic obstructive pulmonary diseases
Irreversibly decrease an individuals ability to force air out of lungs
89
Asthma
The result of inflammation in the bronchioles reducing the amount of oxygen that can reach the alveoli Reversible There are symptom-free periods that follow each episode