Term
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Definition
| includes ventilation, gas exchange and cellular respiration |
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Term
| What is cellular respiration? |
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Definition
| INTRAcellular process which involves oxidation of substrates to produce ATP |
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Term
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Definition
diffusion between air in lungs & blood
diffusion between blood & tissues |
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Term
True or False
The larger the animal, the less oxygen is required per kg of body weight to carry out cellular respiration / metabolism |
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Definition
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Term
True or False
The larger the animal, the more heat is lost per kg of body weight |
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Definition
false
small animals lose proportionally more heat than larger ones (have a greater metabolic rate) |
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Term
| What are the divisions of the respiratory tract? |
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Definition
Upper: nose, nasal cavity, pharynx, larynx
Lower: trachea, bronchi, lungs |
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Term
| What is the role of the vestibular folds? |
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Definition
| work with epiglottis to prevent swallowed material from entering the larynx |
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Term
| What cells trigger a cough reflex? Where are they? |
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Definition
| supepithelial irritant receptors at the junction of primary bronchi (carina) |
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Term
| Components of the conducting zone of the tracheobronchial tree are made of... |
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Definition
| cartilage & smooth muscle |
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Term
| What components make up the conducting zone of the tracheobronchial tree? |
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Definition
| trachea, bronchi, bronchioles, terminal bronchioles |
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Term
| What components make up the respiratory zone of the tracheobronchial tree? |
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Definition
| respiratory bronchioles, alveoli |
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Term
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Definition
| volume breathed in one breath |
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Term
| Inspiratory reserve volume |
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Definition
| Volume between normal inhalation and maximal inhalation |
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Term
| Expiratory reserve volume |
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Definition
| Volume between normal exhalation and maximal exhalation |
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Term
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Definition
| Amount of air left in lungs after max exhale |
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Term
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Definition
| Tidal volume + inspiratory reserve |
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Term
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Definition
| Tidal volume + inspiratory reserve + expiratory reserve |
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Term
| Functional residual volume |
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Definition
| Expiratory reserve + residual volume |
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Term
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Definition
| Inspiratory reserve + tidal + expiratory reserve + residual |
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Term
| Volume of each breath X breaths/minute |
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Definition
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Term
| What do Type I & Type 1 pneumocytes do? Which are more common? |
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Definition
I - gas exchange, more common
II - produce surfactant |
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Term
| How does surfactant work? |
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Definition
| lipids aggregate on surface of hydrophilic molecules to minimize surface tension |
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Term
True or False
Surface tension of fluid film is constant across small and large alveoli |
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Definition
False
This would create higher pressure inside the small alveoli causing them to collapse. There is more surfactant in smaller alveoli to equalize pressure |
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Term
| What does the LaPlace equation express? |
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Definition
| pressure within alveoli, as a function of surface tension over radius of the alveoli |
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Term
True or False
As the volume in the alveoli increases, the pressure decreases |
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Definition
False
pressure in alveoli increases |
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Term
| If alveolar pressure is greater than barometic pressure, will air move in or out of the lungs? |
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Definition
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Term
| If alveolar pressure is less than barometric pressure, will air move in or out of the lungs? |
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Definition
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