DETERMINANTS OF BLOOD PRESSURE
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WHAT IS BLOOD PRESSURE
TEH FORCE EXERTED BY BLOOD AGAINST A UNIT AREA OF BLOOD VESSEL WALLS, EXPRESSED IN mmHg
WHAT SYSTOLIC BP
THE PRESSURE EXERTED BY BLOOD ON BLOOD VESSEL WALLS DURING VENTRICULAR CONTRACTION
WHAT IS DIASTOLIC BP
THE PRESSURE EXERTED ON BLOOD VESSEL WALLS DURING VENTRICULAR RELAXATION
WHAT IS PULSE PRESSURE
THE DIFFERENCE BETWEEN SYSTOLIC AND DIASTOLIC BP
WHAT IS MEAN ARTERIAL PRESSSURE
THE PRESSURE IN THE ARTERIES DURING ONE CARDIAC CYCLE
WHAT IS THE IDEAL MAP
MORE THAN 60
WHAT IS RESISTANCE
OPPOSITION TO BLOODFLOW , THE MEASURE OF FRICTION BLOOD ENCOUNTERS AS IT PASSES THROUGH VESSELS
WHAT ARE SOURCES OF RESISTANCE
BLOOD VESSEL DIAMETER - SMALLER LUMEN = MORE RESISTANCE BLOOD VISCOSITY = MORE THICKBNESS = MORE RESISTANCE BLOOD VESSEL LENGTH = LONGER VESSEL = MORE RESISTANCE
WHICH BLOOD VESSELS ARE THE MAJOR DETERMINANTS OF RESISTANCE
ARTERIOLES
ARE NERUAL MECHANISMS SLOW OR FAST
REALLY FAST
WHAT ARE THE TWO NEURAL REFLEXES ASSOCIATED WITH THE CARDIOVASCULAR CONTROL CENTRES
BARORECEPTOR REFLEX AND CHEMORECEPTOR REFLEX
WHAT DOES A BARORECEPTOR DETECT
STRETCH
IN WHICH TWO PLACES ARE BARARECEPTORS
AORTIC ARCH AND CAROTID SINUS
WHICH CRANIAL NERVES DO STRETCH SIGNALS CONDUCT TO THE MEDULLA VIA WHEN COMING FROM THE AORTIC ARCH AND CAROTID SINUS
AORTIC ARCH = VAGAS CAROTID SINUS = GLOSSOPHARYNGEAL
WHAT ARE THE THREE CARDIOVASCULAR CENTRES IN THE MEDULLA
CARDIOACCELATORY CARDIOINHIBITORY VASOMOTOR SYSTEM
BARORECEPTOR SIGNALS COMING FROM THE CARDIAC CENTRES IN THE MEDULLA THEN STRANSFER SIGANALS TO WHICH DIVIDISION OF THE NERVOUS SYSTEM
SNS
WHAT EFFECT DOES THE SNS HAVE ON VESSELS
VASOCONSTRICT TEH MUSCULAR ARTERIES
WHAT DO CHEMORECEPTORS PICK UP ON
DECREASED PH OR O2
WHAT DOES THE CARDIOACCELATORY CENTRE DO
INFLUENCES SYMPATHETIC SUPPLY TO HEART - INCREASING HR AND CONTRACTILITY, TRAVELLING ALONG T1-5/6 NERVES
WHAT DOES THE CARDIOINHIBITORY CENTRE DO
INFLUNCE PARASYMPATHETIC NERVOUS SUPPLY TO THE HEART, DECREASING HR, NEURAL PROJECTIONS TO TEH DORSAL MOTOR NUCLEUS OF CNX
WHAT DOES THE VASOMOTOR CENTRE DO
INFLUENCE SUMPATHETIC NERVOUS SUPPLY TO ARTERIOLAR SMOOTH MM CAUSING VASOCONSTRICTION
WHAT IS RESPONSIBLE FOR LONG TERM REGULATION OF BP
THE KIDNEYS AS THEY CAN GET RID OF (URINATE) OR REABSORB FLUID