REGULATION OF BLOOD
PRESSURE
Mean Arterial Blood Pressure
MABP = CO x TPR
Mean Arterial Blood Pressure
MABP = CO x TPR
Mean Arterial Blood Pressure = Average blood pressure in an individual, the overall
blood pressure within your body.
Mean Arterial Blood Pressure
MABP = CO x TPR
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.
Mean Arterial Blood Pressure
MABP = CO x TPR
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.
Cardiac Output
CO = HR x SV
Cardiac Output
CO = HR x SV
Heart Rate = The number of times the heart is contracting per minute.
Cardiac Output
CO = HR x SV
Heart Rate = The number of times the heart is contracting per minute.
Stroke Volume = The volume of blood ejected every time the heart contracts.
Branched Blood Vessel
Mean Arterial Blood Pressure
MABP = DP + 1/3(PP)
Mean Arterial Blood Pressure
MABP = DP + 1/3(PP)
Diastolic Pressure = The minimum pressure in the arteries, which occurs near the
beginning of the cardiac cycle when the ventricles are filled with blood
Mean Arterial Blood Pressure
MABP = DP + 1/3(PP)
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.
Mean Arterial Blood Pressure
MABP = DP + 1/3(PP)
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
Vasodilation & Vasoconstriction
Hemorrhage
Venous Return
VR = BV/VC
Venous Return
VR = BV/VC
Venous Return = The volume of blood returning to the heart.
Venous Return
VR = BV/VC
Venous Return = The volume of blood returning to the heart.
Blood Volume = The volume of blood in an individual’s circulatory system.
Venous Return
VR = BV/VC
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.
Stroke Volume
SV = EDV – ESV
End-Diastolic
Volume =
The volume of
blood in the
ventricle at
the end of
filling.
Stroke Volume
SV = EDV – ESV
End-Diastolic
Volume =
The volume of
blood in the
ventricle at
the end of
filling.
Stroke Volume
SV = EDV – ESV
End-Systolic
Volume =
The volume
of blood in
the ventricle
at the end of
contraction
and
beginning of
filling.
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 =
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.
Response to Decreased MABP
1. Venoconstriction
2. Increased Contractibility
3. Increased Heart Rate
4. Vasoconstriction
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