REGULATION OF BLOOD PRESSURE
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Transcript of REGULATION OF BLOOD PRESSURE
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REGULATION OF BLOOD PRESSURE
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MABP = CO x TPR
Mean Arterial Blood Pressure
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MABP = CO x TPR
Mean Arterial Blood Pressure
Mean Arterial Blood Pressure = Average blood pressure in an individual, the overall blood pressure within your body.
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MABP = CO x TPR
Mean Arterial Blood Pressure
Mean Arterial Blood Pressure = Average blood pressure in an individual, the overall blood pressure within your body.
Cardiac Output = Volume of blood pumped out by the heart per minute.
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MABP = CO x TPR
Mean Arterial Blood Pressure
Mean Arterial Blood Pressure = Average blood pressure in an individual, the overall blood pressure within your body.
Cardiac Output = Volume of blood pumped out by the heart per minute.
Total Peripheral Resistance = The combined resistance of a branched artery.
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CO = HR x SV
Cardiac Output
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CO = HR x SV
Cardiac Output
Heart Rate = The number of times the heart is contracting per minute.
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CO = HR x SV
Cardiac Output
Heart Rate = The number of times the heart is contracting per minute.
Stroke Volume = The volume of blood ejected every time the heart contracts.
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Branched Blood Vessel
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MABP = DP + 1/3(PP)
Mean Arterial Blood Pressure
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MABP = DP + 1/3(PP)
Mean Arterial Blood Pressure
Diastolic Pressure = The minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood
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MABP = DP + 1/3(PP)
Mean Arterial Blood Pressure
Diastolic Pressure = The minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood
Systolic Pressure = The peak pressure in the arteries, which occurs near the end of the cardiac cycle when the ventricles are contracting.
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MABP = DP + 1/3(PP)
Mean Arterial Blood Pressure
Diastolic Pressure = The minimum pressure in the arteries, which occurs near the beginning of the cardiac cycle when the ventricles are filled with blood
Systolic Pressure = The peak pressure in the arteries, which occurs near the end of the cardiac cycle when the ventricles are contracting.
Pulse Pressure = Systolic Pressure minus Diastolic Pressure
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Vasodilation & Vasoconstriction
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Hemorrhage
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VR = BV/VC
Venous Return
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VR = BV/VC
Venous Return
Venous Return = The volume of blood returning to the heart.
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VR = BV/VC
Venous Return
Venous Return = The volume of blood returning to the heart.
Blood Volume = The volume of blood in an individual’s circulatory system.
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VR = BV/VC
Venous Return
Venous Return = The volume of blood returning to the heart.
Blood Volume = The volume of blood in an individual’s circulatory system.
Venous Compliance = The degree to which a vein is capable of distending. Compliant veins have large diameters.
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Stroke VolumeSV = EDV – ESV
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Stroke VolumeSV = EDV – ESV
End-Diastolic Volume =
The volume of blood in the ventricle at the end of filling.
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Stroke VolumeSV = EDV – ESV
End-Diastolic Volume =
The volume of blood in the ventricle at the end of filling.
End-Systolic Volume =
The volume of blood in the ventricle at the end of contraction and beginning of filling.
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Frank-Starling Law
The Frank-Starling Mechanism states that the greater the volume of blood entering the heart during diastole, the greater the volume of blood ejected during systolic contraction.
Frank-Starling Law =
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Frank-Starling Law
The Frank-Starling Mechanism states that the greater the volume of blood entering the heart during diastole, the greater the volume of blood ejected during systolic contraction.
Frank-Starling Law = Decreasing blood returning to the heart will make the heart contract weaker.
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Response to Decreased MABP
1. Venoconstriction
2. Increased Contractibility
3. Increased Heart Rate
4. Vasoconstriction
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