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Lung Capacity
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Tidal Volume TV: The amount of air going into or out of the lungs on single breath.
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Expiratory reserve Volume
ERV: Air left to be exhaled AFTER normal breathing (exhalation)
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Inspiratory Reserve volume
IRV: The amount of air you can take in after tidal volume.
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Vital Capacity VC: Total amount of air you can move.
VC = TV + IRV + ERV
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IC: How much air you bring in IC = TV + IRV
Inspiratory Capacity IC: How much air you bring in IC = TV + IRV
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Residual Volume RV: What is left in the lungs that you can not move!
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DEAD SPACE Air in passage way that never makes it to gas exchange.
TV: 500 ml about 150 ml is dead.
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IRV ERV
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Lets see who has the largest lungs shall we? 449
FULL OF HOT AIR Lets see who has the largest lungs shall we? 449
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External respiration Getting air from the atmosphere into the blood. (gas to dissolve into liquid)
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Hemoglobin (Hb) Oxygen is not very soluble, so it binds to the carrier hemoglobin on the RBC.
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Hemoglobin Hb + O2 HbO2 (oxyhemoglobin)
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The hemoglobin contains iron, this is where O2 attaches.
Iron Hb RBC
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Decompression Sickness
Divers go to deep for too long. Extra pressure FORCES nitrogen to dissolve into blood.
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Decompression Sickness
IF they come up too fast nitrogen forms bubbles in joints: “the bends”
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CO poisoning Carbon monoxide: colorless, odorless, Attached to Hb before oxygen does and you suffocate
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Find the percentage of Oxygen and Carbon dioxide that we use or expel.
TABLE Time: Find the percentage of Oxygen and Carbon dioxide that we use or expel.
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: TABLE TIME Oxygen Atmosphere 160 mm Hg Alveoli 100 mm Hg Capillary
Tissue/Cells 20 mm Hg
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: TABLE TIME Oxygen Atmosphere 21% Alveoli 13% Capillary 5%
Tissue/Cells 3%
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: TABLE TIME CO2 Atmosphere .3 mm Hg Alveoli 40 mm Hg Capillary
Tissue/Cells 50 mm Hg
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: TABLE TIME CO2 Atmosphere .0003% Alveoli 5.3% Capillary 6%
Tissue/Cells 6.6%
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Internal Respiration Getting blood to tissues and cells.
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Saturation How much of the hemoglobin is carrying oxygen, at normal pressure ~ 97% saturation.
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Factors Affecting saturation
1. Temperature: When temperature goes down , saturation goes up
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Factors Affecting saturation
2. Acidity: ph down = acidity up = saturation down=
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Factors Affecting saturation
3. Pressure: Pressure down Saturation down
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Effect of altitude (4) 1. Less pressure with higher altitude. 2. Increase breathing rate for more air.
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3. Heart rate increase to move more blood.
Effect of altitude 3. Heart rate increase to move more blood. 4. Body produces more RBC’s
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CO2 Transport Getting CO2 out of tissues. 3 ways to do it.
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CO2 Transport 1. 8% CO2 taken by plasma
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2. Hemoglobin carries about 25%
CO2 Transport 2. Hemoglobin carries about 25%
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CO2 Transport 3. Carbonic Acid CO2 + H2O H2CO3 H+ + HCO3 -
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COLOR OF BREATH LAB LAB TIME
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