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Cardiovascular physio
cardio physio for pharmacology
6
Pharmacology
Graduate
11/12/2010
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Term

The Cardiac Cycle

 Definition
[image]
Term
Pressure, Flow, and Resistance
 Definition
CO= MAP/ PR

PR= peripheral resistance

MAP= difference between left ventricle and right atrium
Term
Stroke volume
 Definition
-increased due to increased contractility
and increased cardiac preload

-decreased due to increased cardiac afterload
Term
Blood Pressure Control Mechanisms
 Definition
1. The Baroreceptor reflex
2. The Kidney
Term
The Baroreceptor Reflex
 Definition
-for rapid control of arterial pressure

-decreased heart rate, decrease contractility

-net effect: reduction in MAP in response to increase pressure
Term
Kidney
 Definition
-long term control of arterial pressure

-Pressure Natriuresis
*increased MAP leads to Na+ and h2o excretion
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