respiratory review part 2
TRANSCRIPT
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Respiratory Review
Part 2
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Breathing helps vent three things from the body. These are the (1) , (2) , and (3) .
carbon dioxideheat
water
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The main goal of inspiration is to:
decrease the pressure in the chest cavity
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The average volume of air taken in per breath by a person at rest is:
500 ml
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The physical act of breathing is called:
ventilation
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At rest, breathing is mostly controlled by the action of what muscle?
diaphragm
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A “normal” or “average” resting breath is called the _____________ volume.
tidal
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The amount of air that always remains in the lungs is called the ____________
volume.
residual
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How many ml of air is the residual volume, on average?
1200 ml
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The volume of air held in the nasal cavity, mouth, pharynx, trachea, and bronchial
tubes:
dead space volume
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How many ml of air is the dead space volume, on average?
150 ml
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The average person breaths out about how many milliliters of water per day?
350 ml
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The average number of breaths a person takes while at rest (as defined in the notes)
is:
10 to 16 times
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The maximum amount of air that can be expelled after maximum inspiration is
called the:
Vital capacity
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The average volume exhaled when measuring the vital capacity is:
4800 ml
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6000 ml
The average total lung capacity in humans is:
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The volume of air that can be inspired beyond a normal, resting breath is the:
inspiratory reserve volume
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The volume of air that can be exhaled beyond a normal, resting breath is the:
expiratory reserve volume
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Air that is actually makes it to the air sacs and is available for oxygen exchange is
called the:
alveolar volume
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The average volume of air (in ml) within a “resting breath” that actually makes it to
the alveoli:
350 ml
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With respect to active/passive and muscle/air, “active” or “normal” inspiration
is considered:
active muscle & passive air
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With respect to active/passive and muscle/air, “passive” or “normal”
expiration is:
passive muscle & active air
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With respect to active/passive and muscle/air, “active” or “forced” expiration
is:
active muscle & active air
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passive muscle & passive air
With respect to active/passive and muscle/air, inspiration after “forced”
expiration is:
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The sheet of muscle below the lungs that helps to expand the chest cavity is called
the:
diaphragm
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The waste gas carried back to the lungs and vented out of the body by exhalation is:
Carbon dioxide
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Breathing controlled by the muscles between the ribs is termed:
costal breathing
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Breathing controlled by the flat sheet of skeletal muscle located directly below the
lungs is called:
diaphragm breathing
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“Breathing in” is more properly termed:
inspiration
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The term “active” with respect to muscles and breathing refers to what action of
muscles?
contraction
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“Breathing out” is more properly termed:
expiration
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All muscles relaxed
Maximum Expiration
Maximum inspiration6000 ml
2800 ml
2300 ml
0 ml
1200 ml
Total Lung Capacity6000 ml
Vital Capacity4800 ml
Functional Residual Capacity2300 ml
Inspiratory Capacity3700 ml
ResidualVolume1200 ml
ExpiratoryReserveVolume1100 ml
TidalVolume500 ml
InspiratoryReserveVolume3200 ml
Dead Space Volume 150 ml
Alveolar Volume = 350 to 3550ml
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Maximum Expiration
Maximum inspiration6000 ml
2300 ml
1200 ml
0 ml
2800 ml
All muscles relaxed
Contraction of:Diaphragm &External Intercostal
“Active” muscle“Passive” air
Relaxation of:Diaphragm &External Intercostal
“Passive” muscle“Active” air
Contraction of:Internal Intercostal &Abdominals
“Active” muscle“Active” air
Relaxation of:Internal Intercostal &Abdominals
“Passive” muscle“Passive” air
Active/passive? Active/passive?
Active/passive?Active/passive?