DETERMINANTS OF BLOOD PRESSURE

Question 1

WHAT IS BLOOD PRESSURE

Answer 1

TEH FORCE EXERTED BY BLOOD AGAINST A UNIT AREA OF BLOOD VESSEL WALLS, EXPRESSED IN mmHg

Question 2

WHAT SYSTOLIC BP

Answer 2

THE PRESSURE EXERTED BY BLOOD ON BLOOD VESSEL WALLS DURING VENTRICULAR CONTRACTION

Question 3

WHAT IS DIASTOLIC BP

Answer 3

THE PRESSURE EXERTED ON BLOOD VESSEL WALLS DURING VENTRICULAR RELAXATION

Question 4

WHAT IS PULSE PRESSURE

Answer 4

THE DIFFERENCE BETWEEN SYSTOLIC AND DIASTOLIC BP

Question 5

WHAT IS MEAN ARTERIAL PRESSSURE

Answer 5

THE PRESSURE IN THE ARTERIES DURING ONE CARDIAC CYCLE

Question 6

WHAT IS THE IDEAL MAP

Answer 6

MORE THAN 60

Question 7

WHAT IS RESISTANCE

Answer 7

OPPOSITION TO BLOODFLOW , THE MEASURE OF FRICTION BLOOD ENCOUNTERS AS IT PASSES THROUGH VESSELS

Question 8

WHAT ARE SOURCES OF RESISTANCE

Answer 8

BLOOD VESSEL DIAMETER - SMALLER LUMEN = MORE RESISTANCE
BLOOD VISCOSITY = MORE THICKBNESS = MORE RESISTANCE
BLOOD VESSEL LENGTH = LONGER VESSEL = MORE RESISTANCE

Question 9

WHICH BLOOD VESSELS ARE THE MAJOR DETERMINANTS OF RESISTANCE

Answer 9

ARTERIOLES

Question 10

ARE NERUAL MECHANISMS SLOW OR FAST

Answer 10

REALLY FAST

Question 11

WHAT ARE THE TWO NEURAL REFLEXES ASSOCIATED WITH THE CARDIOVASCULAR CONTROL CENTRES

Answer 11

BARORECEPTOR REFLEX AND CHEMORECEPTOR REFLEX

Question 12

WHAT DOES A BARORECEPTOR DETECT

Answer 12

STRETCH

Question 13

IN WHICH TWO PLACES ARE BARARECEPTORS

Answer 13

AORTIC ARCH AND CAROTID SINUS

Question 14

WHICH CRANIAL NERVES DO STRETCH SIGNALS CONDUCT TO THE MEDULLA VIA WHEN COMING FROM THE AORTIC ARCH AND CAROTID SINUS

Answer 14

AORTIC ARCH = VAGAS
CAROTID SINUS = GLOSSOPHARYNGEAL

Question 15

WHAT ARE THE THREE CARDIOVASCULAR CENTRES IN THE MEDULLA

Answer 15

CARDIOACCELATORY
CARDIOINHIBITORY
VASOMOTOR SYSTEM

Question 16

BARORECEPTOR SIGNALS COMING FROM THE CARDIAC CENTRES IN THE MEDULLA THEN STRANSFER SIGANALS TO WHICH DIVIDISION OF THE NERVOUS SYSTEM

Answer 16

SNS

Question 17

WHAT EFFECT DOES THE SNS HAVE ON VESSELS

Answer 17

VASOCONSTRICT TEH MUSCULAR ARTERIES

Question 18

WHAT DO CHEMORECEPTORS PICK UP ON

Answer 18

DECREASED PH OR O2

Question 19

WHAT DOES THE CARDIOACCELATORY CENTRE DO

Answer 19

INFLUENCES SYMPATHETIC SUPPLY TO HEART - INCREASING HR AND CONTRACTILITY, TRAVELLING ALONG T1-5/6 NERVES

Question 20

WHAT DOES THE CARDIOINHIBITORY CENTRE DO

Answer 20

INFLUNCE PARASYMPATHETIC NERVOUS SUPPLY TO THE HEART, DECREASING HR, NEURAL PROJECTIONS TO TEH DORSAL MOTOR NUCLEUS OF CNX

Question 21

WHAT DOES THE VASOMOTOR CENTRE DO

Answer 21

INFLUENCE SUMPATHETIC NERVOUS SUPPLY TO ARTERIOLAR SMOOTH MM CAUSING VASOCONSTRICTION

Question 22

WHAT IS RESPONSIBLE FOR LONG TERM REGULATION OF BP

Answer 22

THE KIDNEYS AS THEY CAN GET RID OF (URINATE) OR REABSORB FLUID