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24 Cards in this Set
- Front
- Back
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Question
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Answer
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the smallest branches of the respiratory system tubes terminate in the clusters of microscopic air sacs called?
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alveoli
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the mouth and nasal cavities meet in the region known as the?
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pharynx
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the two primary tubes that branch from the trachea are the?
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bronchi
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pressure changes occuring in the lungs can be traced to the activity of skeletal muscles known as?
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respiratory muscles
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the volume of air that can be forced out of the lungs after a forced inspiration is the ?
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vital capacity
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approximately 25-30% of the carbon dioxide in the body is carried?
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carboxyhemoglobin molecules
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500 + 3100 + 1200 = 4800 mL."
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total lung capacity
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"total of vital capacity and residual volume
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4800 + 1200 = 6000 mL (6 L.)"
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spirometer
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measures volumes and respiratory rate.
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Daltons Law
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"each gas in a mixture of gases exerts its own pressure as if no other gases were present"
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rate of gas exchange depends on, 4 factors...
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"partial pressure difference of the gasses ( high altitude sickness
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molecular weight and solubility of gases"
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oxyhemoglobin is also referred to as ____________?
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fully saturated (4 O2)
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deoxyhemoglobin is also referred to as?
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partially saturated, P.O2 is high, Hb binds larg. amount of oxygen
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which hormones affect BPG (2,3-bisphosphoglycerate) to shift to the right (low affinity = weak binding)
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"TH
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testosterone"
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high ____ and ______ pH. will allow inspiratory area to override voluntary holding of breath?
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high CO2 and low pH. ...
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central chemoreceptors respond to ___, ___, and changes in ___?
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pH., CO2, and CSF.
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peripheral chemoreceptors respond to ___, ___, and ___ changes in blood.
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pH., CO2, and O2
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inflation reflex protects...?
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protects from overinflation of lungs, baroreceptors detect stretch in bronchi and bronchioles, send inhibitory inputs to inspiratory and apneustic centers
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somatic pain can cause ______ breathing?
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rapid
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prolonged visceral pain can cause?
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slowed breathing
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