Term
| 5 Functions of the Respiratory System |
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Definition
1. Provide area for gas exchange between air and blood.
2. Move air to and from exchange surfaces.
3. Protect respiratory surfaces from enviornmental variables and invasion by pathogens.
4. Permit vocal communication
5. Provide olfactory sensation to the CNS. |
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Term
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Definition
| As volume decreases, pressure increases, and as volume increases, pressure decreases. |
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Term
| Serous membranes that protect the lungs |
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Definition
| The visceral and parietal pleura |
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Term
| Regions of the brain that control the repiratory system |
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Definition
| Pons and Medulla oblongata |
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Term
| Functions of the nasal cavity (3) |
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Definition
| Warm, moisten, and filter |
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Term
| What prevents foreign material from reaching the alveoli? |
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Definition
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Term
| Factors that influence hemoglobin saturation |
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Definition
1. The PO2 of blood - high partial pressure allows more gas molecules to move.
2. The Blood pH - increases in hydrogen ion concentration (acidic) weakens the strength of the hemoglobin-oxygen bond.
3. Temperature of blood - Increased temperature less oxygen binds and unloading of oxygen from hemoglobin increases.
4. Metabloic activity within RBCs - involved in glycosis, generates a compound caled 2, 3 bisphosphoglycerate or BPG, which causes more oxygen to be released. |
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Term
| Physical factors that influence ventilation |
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Definition
1. Respiratory resistance- friction/drag in air passageway
2. Lung compliance- expandalibity of the lungs.
3. Lung elasticity- ability of lungs to recoil.
4. Alveolar surface tension- liquid reduces surface tension
(Surfactant- reduces tension, allowing alveoli to fill with air) |
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Term
| How is most CO2 carried to the lungs? |
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Definition
| as a bicarbonate ion in the plasma |
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Term
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Definition
| The air remaining in the lungs |
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Term
| Expiratory reserve volume |
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Definition
| air forced out beyond tidal volume |
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Term
| Inspiratory reserve volume |
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Definition
| air forced in beyond tidal volume |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Gas exchange between blood and body tissue cells |
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Term
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Definition
| gas exchange between alveoli and blood |
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Term
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Definition
| oxygen absorbed into cells and is used to produce ATP |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| noral amount of air taken in in each breath |
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Term
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Definition
| total volume of exchangeable air |
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Term
| 6 nonrespiratory air movements |
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Definition
| coughing, sneezing, laughing, crying, hiccuping, yawning. |
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Term
| Muscles involved in respiration |
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Definition
| diaphragm and intercostal rib muscles |
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Term
| structural differences between right and left lungs |
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Definition
| Left lung has one less lobe (where heart is) |
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