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Oct. 13 Lecture
Part 1
29
Nursing
Graduate
10/14/2014

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Cards

Term
LVEDP, LVEDV, AND PA PRESSURE ARE DIFFERENT ENTITIES FOR WHAT?
Definition
PRELOAD
Term
WHY IS THE LEFT SIDE OF THE HEART HAVE A BIGGER MUSCLE?
Definition
IT'S NOT A FACTOR THAT THE LEFT VENTRICLE PUMPS MORE BLOOD OR HAS TO PUMP BLOOD TO ENTIRE BODY WHICH IS TRUE BUT NOT WHY IT'S THICKER, IT'S BECAUSE IT HAS A HIGHER AFTERLOAD.
Term
WHAT IS THE FORMULA FOR CONTRACTILITY?
Definition
CHANGE IN PRESSURE/CHANGE IN TIME
Term
WHAT IS THE ONLY WAY WE CAN INCREASE CONTRACTILITY?
Definition
SNS
Term
WHEN WE HAVE INCREASES SYMPATHETIC OUTPUT TO THE HEART, WHAT WILL THE SLOPE OF THE LEFT VENTRICULAR PRESSURE CURVE DURING ISOVOLUMETIC CONTRACTION DO?
Definition
IT WILL INCREASE
Term
WHAT THHR DETERMINED BY?
Definition
THE INTRINSIC RHYTHM OF THE SA NODE.
Term
DO WE HAVE A RMP WITH THE SA NODE?
Definition
NO
Term
DESCRIBE WHY THE SA NODE DOESN'T HAVE A RMP.
Definition
CALLING THE SLOPE PHASE 4 WHICH IS ALSO ACLLED SPONTANEOUS DEPOLARIZATION, CAUSED BY A DECREASED K CONDUCTANCE WHICH GOES HAND IN HAND WITH INCREASE NA CONDUCTANCE.
Term
FOR A SA NODE AS K CONDUCTANCE IS FALLING WHAT IS NA CONDUCTANCE DOING? AS THE RATIO CHANGES WHAT IS HAPPENING TO THE MEMBRANE POTENTIAL?
Definition
RISING. IT RISES
Term
WHEN PHASE 0 IS REACHED OF THE SA NODE WHAT CATION CHANNEL IS BEING ACTIVATED?
Definition
CALCIUM
Term
IN TERMS OF THE DIFFERENT PHASES OF THE SA NODE THE HR CAN BE RELATED TO WHAT?
Definition
THE RATE AT WHICH THE CONDUCTANCE RATIOS CHANGE. AND IT'S REFLECTED BY THE RATE AT WHICH THE MEMBRANE POTENTIAL CHANGES.
Term
WHAT DOES SNS DO TO THE CONDUCTANCE RATIO?
Definition
IT SPEED THE RATE AT WHICH K CONDUCTACNE FALLS OR IT SPEEDS UP THE RATE AT WHICH THE NA CONDUCTANCE RISES.
Term
WHAT DOES THE PNS DO IN PHASE 4 OF THE SA NODE?
Definition
IT DECREASES THE SLOPE, NOT ONLY DOES IT DECREASE THE SLOPE BUT IT CAN ACTUALLY DECREASE THE LOWER POINTS OF THAT. YOU END UP WITH A LONG SLOPE, ACTION POTENTIAL THEN LONG SLOPE.
Term
DESCRIBE ELECTRICAL AND MECHANICAL ACTIVITY.
Definition
ELECTRICAL ACTIVITY IS BEFORE MECHANICAL ACTIVITY.
Term
WHAT DETERMINES THE PRELOAD?
Definition
VENOUS RETURN
Term
WHAT SETS OUR VENOUS RETURN?
Definition
THE VASCULARE RESISITANCE IN THE VENOUS SYSTEM
Term
WHAT ARE THE 2 PARTS OF THE VASCULARE RESISITANCE?
Definition
VENOCONSTRICTION AND VENODILATION./ MUSCULOSKELTAL PUMP AND THORACOABDOMINAL PUMP
Term
WHAT HAPPENS TO VENOUS RETURN IF YOU OVERINFLATE THE LUNGS WITH POSITIVE PRESSURE?
Definition
IT DECREASES IT
Term
WHAT DOES THE VALSALVA MANEUVER DO TO VENOUS RETURN?
Definition
DECREASE IT
Term
WHAT ARE THE 2 PRINCIPLES THAT ALTER AFTERLOAD?
Definition
VASOCONSTRICTION AND VASODILATION/ PLASMA VOLUME
Term
PRELOAD AND AFTERLOAD COORELATE WITH EITHER ARTERIAL OR VENOUS?
Definition
PRELOAD=VENOUS AFTERLOAD = ARTERIAL
Term
AS WE INCREASE THE VENTRICULAR VOLUME THE VENTRICLE BECOMES LESS WHAT?
Definition
COMPLIANT
Term
AT WHAT STAGE OF DIASTOLE DO WE HAVE THE HIGHEST COMPLIANCE?
Definition
RAPID INFLOW
Term
WHAT IS THE CAUSE OF DIASTASIS?
Definition
A REDUCTION IN VENTRICULAR COMPLIANCE
Term
WHAT HAPPENS TO ACTIVE AND PASSIVE TENSION WHEN WE GO BEYONG OPTIMAL LENGTH?
Definition
PASSIVE TENSION INCREASES AND ACTIVE TENSION DECREASES
Term
WHAT IS ISOMETRIC CONTRACTION IN TERMS OF LENGTH AND TENSION?
Definition
SAME LENGTH BUT INCREASE IN TENSION (CAN'T PICK UP A HEAVY OBJECT)
Term
WHAT IS ISOTONIC CONTRACTION IN TERMS OF LENGTH AND TENSION?
Definition
SAME TENSION (TONE) AND DECREASE IN LENGTH.
Term
IN A SKELETEL MUSCLE DECRIBE ISOTONIC VS ISOMETRIC CONTRACTION. DOES THIS CONCEPT WORK FOR CARDIAC MUSCLE?
Definition
IF YOU LIFT A LOAD, YOU BEGIN WITH ISOMETRIC CONTRACTION UNTIL THE TONE OF THE MUSCLE EXCEEDS THE LOAD. NO
Term
IF YOU HAVE A SKELETAL MUSCLE AND HANG WEIGHT FROM IT, AT REST THAT WEIGHT IS GOING TO GENERATE A CERTAIN AMOUNT OF WHAT TYPE OF TENSION?
Definition
PASSIVE
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