LESSON 12 – INTRODUCTION TO BLOOD PRESSURE AND CIRCULATORY SYSTEM

USING THE OVERHEAD PROJECTOR TO EXPLAIN BLOOD PRESSURE USING THE OVERHEAD PROJECTOR TO EXPLAIN BLOOD PRESSURE GIVE OUT HANDOUTS GIVE OUT HANDOUTS

SYSTOLIC – IS WHEN THE VENTRICLES CONTRACT CREATING MAXIMUM PRESSURE OF BLOOD. SYSTOLIC – IS WHEN THE VENTRICLES CONTRACT CREATING MAXIMUM PRESSURE OF BLOOD. DIASTOLIC – IS WHEN THE ATRIUM CONTRACTS AND BLOOD IS PASSED INTO THE VENTRICLES – PRESSURE OF BLOOD DURING THE RELAXATION PHASE BETWEEN HEARTBEATS. DIASTOLIC – IS WHEN THE ATRIUM CONTRACTS AND BLOOD IS PASSED INTO THE VENTRICLES – PRESSURE OF BLOOD DURING THE RELAXATION PHASE BETWEEN HEARTBEATS. BLOOD PRESSURE IS THE DIFFERENCE BETWEEN THE TWO – FOR EXAMPLE 120 BLOOD PRESSURE IS THE DIFFERENCE BETWEEN THE TWO – FOR EXAMPLE IS NORMAL 120 IS NORMAL UNITS ARE mmHg of mercury up viscous tube. UNITS ARE mmHg of mercury up viscous tube. DO PRACTICAL USING BLOOD PRESSURE METERS DO PRACTICAL USING BLOOD PRESSURE METERS

INCREASED BLOOD PRESSURE BLOOD PRESSURE IS THE FORCE EXERTED BY BLOOD ON THE WALLS OF THE ARTERIES BLOOD PRESSURE IS THE FORCE EXERTED BY BLOOD ON THE WALLS OF THE ARTERIES INCREASES DURING EXERCISE BECAUSE MORE BLOOD IS PUMPED AROUND THE BODY, INCREASING THE PRESSURE ON THE VESSELS INCREASES DURING EXERCISE BECAUSE MORE BLOOD IS PUMPED AROUND THE BODY, INCREASING THE PRESSURE ON THE VESSELS

SO…..PULSE PRESSURE IS THE DIFFERENCE BETWEEN SYSTOLIC AND DIASTOLIC BLOOD PRESSURE IS THE DIFFERENCE BETWEEN SYSTOLIC AND DIASTOLIC BLOOD PRESSURE ABNORMAL PRESSURE IS SYSTOLIC PERSISTENTLY ABOVE 140mmHg and ABNORMAL PRESSURE IS SYSTOLIC PERSISTENTLY ABOVE 140mmHg and Diastolic persistently above 85mmHg Diastolic persistently above 85mmHg PULSE PRESSURE – CONSTANTLY ABOVE 50 OR BELOW 30 PULSE PRESSURE – CONSTANTLY ABOVE 50 OR BELOW 30

TASK.. WHAT CAN BE DONE TO REDUCE HIGH BLOOD PRESSURE? WHAT CAN BE DONE TO REDUCE HIGH BLOOD PRESSURE?

WHAT EFFECT DOES REGULAR EXERCISE HAVE ON THE CARDIOVASCULAR SYSTEM? DECREASED RESTING HEART RATE DECREASED RESTING HEART RATE HEART RECOVERY RATE HEART RECOVERY RATE INCREASED STROKE VOLUME INCREASED STROKE VOLUME INCREASED CARDIAC OUTPUT INCREASED CARDIAC OUTPUT REDUCED BLOOD PRESSURE REDUCED BLOOD PRESSURE HEALTHY VEINS AND ARTERIES HEALTHY VEINS AND ARTERIES WHY DO THE ABOVE OCCUR? WHY DO THE ABOVE OCCUR?

HOMEWORK WHAT CAUSES CORONARY HEART DISEASE? WHAT CAUSES CORONARY HEART DISEASE? WHAT ARE THE PROBLEMS? WHAT ARE THE PROBLEMS?