RESP105 Ch. 9 Word Scramble

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Question	Answer
The normal alveolar ventilation is about	4/Lmin
The normal pulmonary capillary blood flow is about	5/Lmin
the average overall ventilation-perfusion ratio is	4:5 or 0.8
In the normal individual in the upright position, the V/Q ration in the upper lung is	higher than 0.8
In the normal individual in the upright position, the V/Q ratio in the lower lung region is	is lower than 0.8
In the upright lung, the V/Q ratio progressively	decreases from top to bottom
The PAo2 is determined by the balance between	the amount of oxygen entering the alveoli and it's removal by capillary blood flow
the PAco2 is determined by the balance between	The amount of carbon dioxide that diffuses into the alveoli from the capillary blood and it's removal from the alveoli by means of ventilation.
An increase V/Q ratio can develp from either	an increase in ventilation or a decrease in perfusion
When the V/Q ratio increases the PAo2 _______ and the PAco2 _______	PAo2 rises and the PAco2 falls
The PAo2 increases because it does not	diffuse into the blood as fast as it enters (or is ventilated) into the alveolus
the PAco2 decreases because it is	washed out of the alveoli faster than it is replaced by the venous blood
In the upright lung, an increased V/Q ratio is found in the	upper lung regions
a decreased V/Q ratio can develop from either	a decrease in ventilation or an increase in perfusion
when the V/Q ratio decreases, PA02 ____ and the PAco2	PAo2 falls and PAco2 rises
The PAo2 decrease because it moves	out of the alveolus & into the pulmonary capillary blood faster than it is replenished by ventilation
The PAco2 increases because it moves	out of the capillary blood & into the alveolus faster than it is washed out of the alveolus
In the upright lung, a decreased V/Q ratio is found in the	lower lung regions
internal respiration is defined as	gas exchange between the systemic capillaries & the cells
Under normal circumstances, about ___mL of oxygen are consumed by the tissue cells in 1 minute.	250
Normally the tissue cells produce about ____ mL of carbon dioxide produced (Vco2)	200
respiratory quotient is defined as the	ratio between the volume of carbon dioxide produced (Vco2)
The respiratory quotient is expressed as	RQ= Vco2 _____ Vo2
external respiration is defined as the	gas exchange between the pulmonary capillaries & the alveoli
respiratory exchange ratio is defined as the	quantity of O2 &CO2 exchanged during a period of 1 minute
some pulmonary disorders that increase v/q ratio	pulmonary emboli partial or complete obstruction extrinsic pressure on the pulmonary vessels destruction of pulmonary vessels decreased cardiac output
pulmonary disorders that decrease v/q ratio	obstructive lung disorders restrictive lung disorders hypoventilation

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