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kin. 601
Control of Ventilation
12
Science
Undergraduate 4
04/20/2009

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Cards

Term
what is the primary function of the lung?
Definition
exchange 02 and C02 between the gas and blood within the lung so that Pa02 and PaC02 are maintained within normal limits.
Term
what happen is O2 doen not reach the brain?
Definition
brain damage
Term
what are sensors?
Definition
gather information send to central control room
Term
what is the central controller
Definition
brain, pons, medulla, sends information to the efectors
Term
what are the effectors?
Definition
respiratory muscles that control VE
Term
The 3 elements of resipiratory control are the sensors, central controller, effectors. Does this system have a positive or negative feedback loop?
Definition
negative feedback
Term
where does the regular automatic process of breathing originate?
Definition
Brain stem
Term
central controller can be overridden by ______ when desired
Definition
cortex
Term
a few other regions of the brain can effect the control of breathing under special circumstances, what are they? (2)
Definition
limbic system and the hypothalamus
Term
within the brain stem the pattern of inspiration and expiration are contolled neurons located within what area of the brain stem?
Definition
pons and the medulla
Term
what is the medulla?
Definition
The pace maker for VE
Term
what does the pneumotaxic center do? where is it located?
Definition
the pneumotaxic center is consideres the fine tuning unit. it is located within the pons and it inhibits inspiratory neurons, the main function is to aid in establishing a normal respiratory rhythm.
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